Hello,
I will explain a bit about my setup firstly before I get into my issue. So I have a home server running Windows Server 2012 R2. I am using Hyper-V role to host a OpenMediaVault VM. I use this to create an easy OpenVPN that I can use anywhere. I have attached my OMV VM to a external network virtual switch (has full internet connection).
The issue is when I generate my VPN config and use the certificates and test on my phone. When I connect locally to my WiFi I can connect to my VPN VM machine no issues at all. However when I flick to 4G and try to connect it sticks on 'waiting from reply to server'. I have tested this with a friend on his laptop and he also has the same issue.
I have port forwarded in my router the correct port and IP so it should allow connections, I have even tried disabling the Host 2012 R2 firewall but still no joy. I belive it somthing in Hyper-V virtual switch stopping it.
Anyone got any idea what the issue could be?