@blueatlantic That sounds pretty straightforward. I don't have any Mac computers, therefore I can't test this myself. Can you actually "ping" any of the clients in your LAN network from the OpenVPN...

@blueatlantic You don't need to disable the firewall of your Archer C3150 router! I think this is not what Kevin_Z meant when he asked you to disable the firewall of your "server". What exactly are...

I believe TomasJ is referring to this feature: https://www.tp-link.com/us/support/faq/1606/

@julamee If the two IP addresses are different, then it means the WAN IP address of your router is probably not a public IP address and thus can't be reached from the internet. Is the Nanostation set...

@julamee Are you sure your ISP is assigning a public IP address to your router? In case you are not sure, go to a website like "www.ipchicken.com" or similar and then compare the IP address it shows...

@audimax I have no clue. By "looses almost all of its Settings" do you mean that your previously customized settings for "3G/4G" mode have been set back to default after you've moved the mode switch...