Behind vpn and dns. No connection

[ThomasPGH]

Have uploaded a printscreen. So take a look

Your screenshot shows that your router works as a client, not server. This means the VPN you got/rent is a public VPN, just like most VPNs (Astrill, NordVPN, whatever) that help you stay hidden when you browse the internet.

It is not for accessing your Jellyfin (or any other network resource) at home when you're away.