Why can't I access my work files over a VPN when 4G Only mode is enabled?
Hi, I have a TL-MR6400 and a sim card inserted. 4G Only mode is always enabled and everything works fine on all devices. I am working from home, and to access my work server, programs, and files we use OpenVPN. Problem is that I can't access my work files when 4G Only mode is enabled, but actually can access those files when 3G Only mode is enabled. I have also tried removing the sim card from the router and try accessing the network by inserting it into my mobile phone. It works fine that way. So it is not my provider issue but rather a router issue. Why is that happening and how to fix it? Something seems to keep denying access to my work files while using 4G mode, but not when using 3G mode, and the sim card alone has no problem when inserted into a mobile phone.