I would like you to access the router via SSH. For login credentials use root as a username, and your router's password.
Next, execute the following command and post a screenshot with the output:
Then, enter the following command to generate a troubleshoot file:
You will need to copy the file generated by the above script to your PC and upload it by editing your question. To do it, first, download WinSCP application. To login, follow instructions here. Copy the file from /tmp directory, which should be called troubleshoot.tar.gz.