diff --git a/src/app/core/services/daemon/daemon-data.service.ts b/src/app/core/services/daemon/daemon-data.service.ts
index 584c840..8694192 100644
--- a/src/app/core/services/daemon/daemon-data.service.ts
+++ b/src/app/core/services/daemon/daemon-data.service.ts
@@ -420,7 +420,7 @@ export class DaemonDataService {
 
       await this.refreshMiningStatus();
 
-      await this.refreshMinerData();
+      if (this._daemonInfo.synchronized) await this.refreshMinerData();
 
       this._gettingPeerList = true;
       this._peerList = await this.daemonService.getPeerList();
diff --git a/src/app/pages/blockchain/blockchain.component.ts b/src/app/pages/blockchain/blockchain.component.ts
index bf2ce46..09dc6b9 100644
--- a/src/app/pages/blockchain/blockchain.component.ts
+++ b/src/app/pages/blockchain/blockchain.component.ts
@@ -25,7 +25,14 @@ export class BlockchainComponent implements AfterViewInit {
     return this.daemonData.lastBlockHeader;
   }
 
-  public getLastBlockError: string = '';
+  public get daemonSynchronized(): boolean {
+    return this.daemonData.info ? this.daemonData.info.synchronized : false;
+  }
+
+  public get getLastBlockError(): string {
+    return this.daemonSynchronized ? '' : 'Last block header not available, blockchain is not synchronized';
+  }
+  
   public block?: Block;
   public getBlockByHash: boolean = false;
   public getBlockHash: string = '';
diff --git a/src/app/pages/mining/mining.component.html b/src/app/pages/mining/mining.component.html
index 8772392..66dfda7 100644
--- a/src/app/pages/mining/mining.component.html
+++ b/src/app/pages/mining/mining.component.html
@@ -13,7 +13,14 @@
 
 <div *ngIf="daemonRunning && !daemonStopping" class="tab-content" id="pills-tabContent">
   <div class="tab-pane fade show active" id="pills-mining-status" role="tabpanel" aria-labelledby="pills-mining-status-tab" tabindex="0">
-    <div *ngIf="miningStatusLoading">
+    <div *ngIf="coreBusy" class="alert alert-danger d-flex align-items-center justify-content-center text-center" role="alert">
+      <h4><i class="bi bi-exclamation-triangle m-2"></i></h4>&nbsp;&nbsp;
+      <div>
+        Mining status not available, node is not synchronized
+      </div>
+    </div>
+
+    <div *ngIf="!coreBusy && miningStatusLoading">
       <!-- Placeholder per il caricamento -->
       <div class="card">
         <div class="card-body">
@@ -31,7 +38,7 @@
       </div>
     </div>
 
-    <div *ngIf="miningStatus && miningStatus.active" class="card">
+    <div *ngIf="!coreBusy && miningStatus && miningStatus.active" class="card">
       <div class="card-header bg-primary text-white">
         <h4>Mining Status</h4>
       </div>
@@ -78,7 +85,7 @@
       </div>
     </div>
 
-    <div *ngIf="miningStatus && !miningStatus.active" class="row g-5 p-2">
+    <div *ngIf="!coreBusy && miningStatus && !miningStatus.active" class="row g-5 p-2">
       <div class="cold-md-7 col-lg-12">
         <div class="row gy-3">
           <h4 class="mb-3">Start mining on the daemon</h4>
@@ -128,7 +135,7 @@
     <div *ngIf="coreBusy" class="alert alert-danger d-flex align-items-center justify-content-center text-center" role="alert">
       <h4><i class="bi bi-exclamation-triangle m-2"></i></h4>&nbsp;&nbsp;
       <div>
-        Core is busy: miner data is not available during blockchain sync
+        Miner data is not available, node is not synchronized
       </div>
     </div>
 
@@ -371,7 +378,7 @@
 
     <hr class="my-4">
 
-    <button *ngIf="!submittingBlock" class="w-100 btn btn-primary btn-lg" type="button" (click)="submitBlock()">Submit Block</button>
+    <button *ngIf="!submittingBlock" class="w-100 btn btn-primary btn-lg" type="button" (click)="submitBlock()" [disabled]="!validBlobData()">Submit Block</button>
     <button *ngIf="submittingBlock" class="w-100 btn btn-primary btn-lg" type="button" disabled>Submitting Block ...</button>
   </div>
 
diff --git a/src/app/pages/mining/mining.component.ts b/src/app/pages/mining/mining.component.ts
index 08d0311..aa30762 100644
--- a/src/app/pages/mining/mining.component.ts
+++ b/src/app/pages/mining/mining.component.ts
@@ -16,8 +16,9 @@ import { DaemonDataService } from '../../core/services';
 export class MiningComponent implements AfterViewInit {
 
   public readonly navbarLinks: NavbarLink[];
+
   public get coreBusy(): boolean {
-    return this.daemonData.minerDataCoreBusyError;
+    return this.daemonData.info? !this.daemonData.info.synchronized : true;
   }
 
   public get miningStatus(): MiningStatus | undefined {