I'd be more than happy to assist you.
Step 1: Open your Internet browser and type the IP address of the router in the address bar. The default IP address is 192.168.0.1. At the login, enter the username (admin) and your password (default password ***** *****).
Step 2: Click on the Advanced Tab at the top and Advanced Network on the left sideStep 3: Uncheck UPnP
Step 4: Save Settings
If that resolves your issue please rate my answer. If you still need assistance, I'm standing by just reply back instead. Thank you.