Pin length fixes

app/src/main/java/com/swifttech/remit/android/features/registerv2/existingcustomer/presenter/ExistingCustomerRegisterV2Presenter.java

@@ -357,7 +357,7 @@ public class ExistingCustomerRegisterV2Presenter extends BaseViewModel implement
         }
 
         public boolean validateConfirmPin(CharSequence pin) {
-            if (pin == null || pin.length() < 1) {
+            if (pin == null || pin.length() !=6) {
                 existingRegisterSubmitViewLiveData.setConfirmPinInputLiveData(new FormInputStateDTO<>(false, "Pin must be of 6 digit"));
                 this.confirmPin = null;
                 return false;