diff --git a/frontend/src/app/components/difficulty/difficulty.component.ts b/frontend/src/app/components/difficulty/difficulty.component.ts
index 7f305416f..81084f524 100644
--- a/frontend/src/app/components/difficulty/difficulty.component.ts
+++ b/frontend/src/app/components/difficulty/difficulty.component.ts
@@ -194,7 +194,7 @@ export class DifficultyComponent implements OnInit {
 
   @HostListener('pointerdown', ['$event'])
   onPointerDown(event): void {
-    if (this.epochSvgElement.nativeElement?.contains(event.target)) {
+    if (this.epochSvgElement?.nativeElement?.contains(event.target)) {
       this.onPointerMove(event);
       event.preventDefault();
     }
@@ -202,7 +202,7 @@ export class DifficultyComponent implements OnInit {
 
   @HostListener('pointermove', ['$event'])
   onPointerMove(event): void {
-    if (this.epochSvgElement.nativeElement?.contains(event.target)) {
+    if (this.epochSvgElement?.nativeElement?.contains(event.target)) {
       this.tooltipPosition = { x: event.clientX, y: event.clientY };
       this.cd.markForCheck();
     }
diff --git a/production/mempool-config.liquid.json b/production/mempool-config.liquid.json
index d67d7b794..a4f4bcd81 100644
--- a/production/mempool-config.liquid.json
+++ b/production/mempool-config.liquid.json
@@ -25,6 +25,12 @@
   "ESPLORA": {
     "UNIX_SOCKET_PATH": "/elements/socket/esplora-liquid-mainnet",
     "FALLBACK": [
+      "http://node201.va1.mempool.space:3001",
+      "http://node202.va1.mempool.space:3001",
+      "http://node203.va1.mempool.space:3001",
+      "http://node204.va1.mempool.space:3001",
+      "http://node205.va1.mempool.space:3001",
+      "http://node206.va1.mempool.space:3001",
       "http://node201.fmt.mempool.space:3001",
       "http://node202.fmt.mempool.space:3001",
       "http://node203.fmt.mempool.space:3001",
diff --git a/production/mempool-config.liquidtestnet.json b/production/mempool-config.liquidtestnet.json
index 3a76b4c86..cf2d70045 100644
--- a/production/mempool-config.liquidtestnet.json
+++ b/production/mempool-config.liquidtestnet.json
@@ -25,6 +25,12 @@
   "ESPLORA": {
     "UNIX_SOCKET_PATH": "/elements/socket/esplora-liquid-testnet",
     "FALLBACK": [
+      "http://node201.va1.mempool.space:3004",
+      "http://node202.va1.mempool.space:3004",
+      "http://node203.va1.mempool.space:3004",
+      "http://node204.va1.mempool.space:3004",
+      "http://node205.va1.mempool.space:3004",
+      "http://node206.va1.mempool.space:3004",
       "http://node201.fmt.mempool.space:3004",
       "http://node202.fmt.mempool.space:3004",
       "http://node203.fmt.mempool.space:3004",
diff --git a/production/mempool-config.mainnet-lightning.json b/production/mempool-config.mainnet-lightning.json
index 41e42a5bd..6bd326bfa 100644
--- a/production/mempool-config.mainnet-lightning.json
+++ b/production/mempool-config.mainnet-lightning.json
@@ -16,8 +16,33 @@
     "PASSWORD": "__BITCOIN_RPC_PASS__"
   },
   "ESPLORA": {
-    "REST_API_URL": "http://127.0.0.1:5000",
-    "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-mainnet"
+    "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-mainnet",
+    "FALLBACK": [
+      "http://node201.va1.mempool.space:3000",
+      "http://node202.va1.mempool.space:3000",
+      "http://node203.va1.mempool.space:3000",
+      "http://node204.va1.mempool.space:3000",
+      "http://node205.va1.mempool.space:3000",
+      "http://node206.va1.mempool.space:3000",
+      "http://node201.fmt.mempool.space:3000",
+      "http://node202.fmt.mempool.space:3000",
+      "http://node203.fmt.mempool.space:3000",
+      "http://node204.fmt.mempool.space:3000",
+      "http://node205.fmt.mempool.space:3000",
+      "http://node206.fmt.mempool.space:3000",
+      "http://node201.fra.mempool.space:3000",
+      "http://node202.fra.mempool.space:3000",
+      "http://node203.fra.mempool.space:3000",
+      "http://node204.fra.mempool.space:3000",
+      "http://node205.fra.mempool.space:3000",
+      "http://node206.fra.mempool.space:3000",
+      "http://node201.tk7.mempool.space:3000",
+      "http://node202.tk7.mempool.space:3000",
+      "http://node203.tk7.mempool.space:3000",
+      "http://node204.tk7.mempool.space:3000",
+      "http://node205.tk7.mempool.space:3000",
+      "http://node206.tk7.mempool.space:3000"
+    ]
   },
   "LIGHTNING": {
     "ENABLED": true,
diff --git a/production/mempool-config.mainnet.json b/production/mempool-config.mainnet.json
index d4222bd05..b2878ceef 100644
--- a/production/mempool-config.mainnet.json
+++ b/production/mempool-config.mainnet.json
@@ -37,6 +37,12 @@
   "ESPLORA": {
     "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-mainnet",
     "FALLBACK": [
+      "http://node201.va1.mempool.space:3000",
+      "http://node202.va1.mempool.space:3000",
+      "http://node203.va1.mempool.space:3000",
+      "http://node204.va1.mempool.space:3000",
+      "http://node205.va1.mempool.space:3000",
+      "http://node206.va1.mempool.space:3000",
       "http://node201.fmt.mempool.space:3000",
       "http://node202.fmt.mempool.space:3000",
       "http://node203.fmt.mempool.space:3000",
@@ -74,6 +80,12 @@
     "AUDIT": true,
     "AUDIT_START_HEIGHT": 774000,
     "SERVERS": [
+      "node201.va1.mempool.space",
+      "node202.va1.mempool.space",
+      "node203.va1.mempool.space",
+      "node204.va1.mempool.space",
+      "node205.va1.mempool.space",
+      "node206.va1.mempool.space",
       "node201.fmt.mempool.space",
       "node202.fmt.mempool.space",
       "node203.fmt.mempool.space",
diff --git a/production/mempool-config.signet-lightning.json b/production/mempool-config.signet-lightning.json
index 9971729e2..229b226be 100644
--- a/production/mempool-config.signet-lightning.json
+++ b/production/mempool-config.signet-lightning.json
@@ -16,8 +16,33 @@
     "PASSWORD": "__BITCOIN_RPC_PASS__"
   },
   "ESPLORA": {
-    "REST_API_URL": "http://127.0.0.1:5003",
-    "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-signet"
+    "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-signet",
+    "FALLBACK": [
+      "http://node201.va1.mempool.space:3003",
+      "http://node202.va1.mempool.space:3003",
+      "http://node203.va1.mempool.space:3003",
+      "http://node204.va1.mempool.space:3003",
+      "http://node205.va1.mempool.space:3003",
+      "http://node206.va1.mempool.space:3003",
+      "http://node201.fmt.mempool.space:3003",
+      "http://node202.fmt.mempool.space:3003",
+      "http://node203.fmt.mempool.space:3003",
+      "http://node204.fmt.mempool.space:3003",
+      "http://node205.fmt.mempool.space:3003",
+      "http://node206.fmt.mempool.space:3003",
+      "http://node201.fra.mempool.space:3003",
+      "http://node202.fra.mempool.space:3003",
+      "http://node203.fra.mempool.space:3003",
+      "http://node204.fra.mempool.space:3003",
+      "http://node205.fra.mempool.space:3003",
+      "http://node206.fra.mempool.space:3003",
+      "http://node201.tk7.mempool.space:3003",
+      "http://node202.tk7.mempool.space:3003",
+      "http://node203.tk7.mempool.space:3003",
+      "http://node204.tk7.mempool.space:3003",
+      "http://node205.tk7.mempool.space:3003",
+      "http://node206.tk7.mempool.space:3003"
+    ]
   },
   "LIGHTNING": {
     "ENABLED": true,
diff --git a/production/mempool-config.signet.json b/production/mempool-config.signet.json
index 38d59c0e9..c4b84f11b 100644
--- a/production/mempool-config.signet.json
+++ b/production/mempool-config.signet.json
@@ -27,6 +27,12 @@
   "ESPLORA": {
     "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-signet",
     "FALLBACK": [
+      "http://node201.va1.mempool.space:3003",
+      "http://node202.va1.mempool.space:3003",
+      "http://node203.va1.mempool.space:3003",
+      "http://node204.va1.mempool.space:3003",
+      "http://node205.va1.mempool.space:3003",
+      "http://node206.va1.mempool.space:3003",
       "http://node201.fmt.mempool.space:3003",
       "http://node202.fmt.mempool.space:3003",
       "http://node203.fmt.mempool.space:3003",
diff --git a/production/mempool-config.testnet-lightning.json b/production/mempool-config.testnet-lightning.json
index ff7d4766f..60ee128a2 100644
--- a/production/mempool-config.testnet-lightning.json
+++ b/production/mempool-config.testnet-lightning.json
@@ -16,8 +16,33 @@
     "PASSWORD": "__BITCOIN_RPC_PASS__"
   },
   "ESPLORA": {
-    "REST_API_URL": "http://127.0.0.1:5002",
-    "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-testnet"
+    "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-testnet",
+    "FALLBACK": [
+      "http://node201.va1.mempool.space:3002",
+      "http://node202.va1.mempool.space:3002",
+      "http://node203.va1.mempool.space:3002",
+      "http://node204.va1.mempool.space:3002",
+      "http://node205.va1.mempool.space:3002",
+      "http://node206.va1.mempool.space:3002",
+      "http://node201.fmt.mempool.space:3002",
+      "http://node202.fmt.mempool.space:3002",
+      "http://node203.fmt.mempool.space:3002",
+      "http://node204.fmt.mempool.space:3002",
+      "http://node205.fmt.mempool.space:3002",
+      "http://node206.fmt.mempool.space:3002",
+      "http://node201.fra.mempool.space:3002",
+      "http://node202.fra.mempool.space:3002",
+      "http://node203.fra.mempool.space:3002",
+      "http://node204.fra.mempool.space:3002",
+      "http://node205.fra.mempool.space:3002",
+      "http://node206.fra.mempool.space:3002",
+      "http://node201.tk7.mempool.space:3002",
+      "http://node202.tk7.mempool.space:3002",
+      "http://node203.tk7.mempool.space:3002",
+      "http://node204.tk7.mempool.space:3002",
+      "http://node205.tk7.mempool.space:3002",
+      "http://node206.tk7.mempool.space:3002"
+    ]
   },
   "LIGHTNING": {
     "ENABLED": true,
diff --git a/production/mempool-config.testnet.json b/production/mempool-config.testnet.json
index c5bdfc8d7..b3d7cfadd 100644
--- a/production/mempool-config.testnet.json
+++ b/production/mempool-config.testnet.json
@@ -27,6 +27,12 @@
   "ESPLORA": {
     "UNIX_SOCKET_PATH": "/bitcoin/socket/esplora-bitcoin-testnet",
     "FALLBACK": [
+      "http://node201.va1.mempool.space:3002",
+      "http://node202.va1.mempool.space:3002",
+      "http://node203.va1.mempool.space:3002",
+      "http://node204.va1.mempool.space:3002",
+      "http://node205.va1.mempool.space:3002",
+      "http://node206.va1.mempool.space:3002",
       "http://node201.fmt.mempool.space:3002",
       "http://node202.fmt.mempool.space:3002",
       "http://node203.fmt.mempool.space:3002",