diff --git a/backend/app.js b/backend/app.js
index e51a2cd..7c41fa0 100644
--- a/backend/app.js
+++ b/backend/app.js
@@ -98,7 +98,7 @@ var blockInterval = setInterval( function() {
 	rpc.z_listreceivedbyaddress(fullnode.addr, 1).then(txs => {
 		var re = /.*ZGO::(.*)\sReply-To:\s(z\w+)/;
 		async.each (txs, function(txData, callback) {
-			var memo = hexToString(txData.memo);
+			var memo = hexToString(txData.memo).replace(/\0/g, '');
 			if (re.test(memo)) {
 				//console.log('Processing tx:', memo);
 				var match = re.exec(memo);
@@ -109,6 +109,11 @@ var blockInterval = setInterval( function() {
 					var amount = txData.amount;
 					var expiration = blocktime;
 					//console.log('  ', session, blocktime);
+					txmodel.updateOne({txid: txData.txid}, { address: address, session: session, confirmations: txData.confirmations, amount:txData.amount, memo: memo}, {new:true, upsert:true}, function(err,docs) {
+						if (err) {
+							console.log(err);
+						}
+					});
 					if (txData.confirmations >= 10 ) {
 						usermodel.findOne({address: address, session: session, blocktime: blocktime}).then(function(doc){
 							if (doc != null) {
@@ -162,17 +167,7 @@ var blockInterval = setInterval( function() {
 						}).catch((err) => {
 							console.log(err);
 						});
-						txmodel.deleteMany({session: session}, function(err) {
-							if (err) console.log(err);
-							console.log('Deleted confirmed login');
-						});
-					} else {
-						txmodel.updateOne({address: address, session: session}, { confirmations: txData.confirmations, amount:txData.amount}, {new:true, upsert:true}, function(err,docs) {
-							if (err) {
-								console.log(err);
-							}
-						});
-					}
+					} 
 				}
 			}
 		}, function (err) {
@@ -230,8 +225,8 @@ app.get('/api/users', (req, res, next) => {
 });
 
 app.get('/api/pending', (req, res, next) => {
-	console.log('Get: /api/pending');
-	txmodel.find({'session': req.query.session}).
+	console.log('Get: /api/pending', req.query.session);
+	txmodel.find({'session': req.query.session, 'confirmations': {$lt: 10}}).
 		then((documents) => {
 			if (documents.length > 0) {
 				//console.log('pending', documents);
diff --git a/backend/models/tx.js b/backend/models/tx.js
index d55ba1d..570b325 100644
--- a/backend/models/tx.js
+++ b/backend/models/tx.js
@@ -4,7 +4,9 @@ const txSchema = mongoose.Schema({
 	address: {type: String},
 	session: {type: String, required:true},
 	confirmations: {type: Number, required:true},
-	amount: {type: Number, required:true}
+	amount: {type: Number, required:true},
+	txid: {type:String, required:true},
+	memo: {type:String}
 });
 
 module.exports = mongoose.model('Tx', txSchema);
diff --git a/src/app/login/login.component.html b/src/app/login/login.component.html
index 222274e..052079c 100644
--- a/src/app/login/login.component.html
+++ b/src/app/login/login.component.html
@@ -52,6 +52,7 @@
 					</mat-option>
 				</mat-select>
 			</mat-form-field>
+			<p *ngIf="pinError">Wrong pin!</p>
 			<mat-card-actions>
 				<button mat-raised-button color="primary" [disabled]="!entryForm.valid" (click)="login()">
 					<mat-icon class="icon">login</mat-icon><span class="bigbutton">Log in</span>
diff --git a/src/app/login/login.component.ts b/src/app/login/login.component.ts
index b54edf0..bc02a77 100644
--- a/src/app/login/login.component.ts
+++ b/src/app/login/login.component.ts
@@ -26,6 +26,7 @@ export class LoginComponent implements OnInit {
 	nodeAddress: string = '';
 	localToken: string | null = '';
 	selectedValue: number = 0.001;
+	pinError: boolean = false;
 	public user:User = {
 		address: '',
 		session: '',
@@ -83,6 +84,7 @@ export class LoginComponent implements OnInit {
 	}
 
 	ngOnInit(){
+		this.pinError = false;
 		//console.log('Activated route data in Component:::', this.activatedRoute.data);
 		this.activatedRoute.data.subscribe((addrData) => {
 			//console.log('FETCH ADDRESS', addrData);
@@ -145,6 +147,8 @@ export class LoginComponent implements OnInit {
 		if (this.user.pin === this.pinForm.value.pinValue) {
 			this.userService.validateUser();
 			this.router.navigate(['/shop']);
+		} else {
+			this.pinError = true;
 		}
 	}