Apologies, maybe I wasn't clear enough.
Click Monitoring, and then click Logging on the left menu. Then click View on the right. If it says logging is disabled, enable it.
You will see many logs flowing.Let that screen stay open,
You should see some errors/warnings regarding the connection attempt. Take a screenshot of those if possible.
That error is related to a site-to-site VPN tunnel. If you think that you shouldn't be seeing site-to-site VPN stuff, then there is a possibility that you have incorrectly configured the remote access VPN.
I believe this tutorial will be helpful.