lack of IP assignment with VyprtVpn installed on Tomato

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Tantalio
lack of IP assignment with VyprtVpn installed on Tomato

I'm going crazy for a problem with Tomato 140 and the VyprtVpn application installed on a Netgear R7000 router, the VPN is loaded but any chosen nationality does not give me the IP address.
I state that both the Windows 7 PC and the Android phone connected to the router with VyprVpn applications work well.
I enclose photos of the problem.
I would be infinitely grateful if someone could help me to solve the problem.

https://imageshack.com/a/img922/8940/5vGzzV.jpg

https://imageshack.com/a/img922/7540/3yHblE.jpg