"Host" is the machine ip that the Wireguard service is running on or the ip address of the vpn provider?
Read https://github.com/BrodjagaRatnik…via-Custom-Mode
Endpoint = 193.148.18.82:51820 in the generated wireguard conf file from the provider... becomes Host = 193.148.18.82 without the endpoint :51820
Code
[provider_wireguard]
Type = WireGuard
Name = Custom_Proton_...
Host = 193.148.18.82
WireGuard.Address = 10.2.0.2/32
WireGuard.ListenPort = 51820
WireGuard.MTU = 1420
WireGuard.PrivateKey = YOUR_PROTON_PRIVATE_KEY_===================
WireGuard.PublicKey = YOUR_PROTON_SERVER_PUBLIC_KEY_==============
WireGuard.DNS = 10.2.0.1
WireGuard.AllowedIPs = 0.0.0.0/0, ::/0
WireGuard.EndpointPort = 51820
WireGuard.PersistentKeepalive = 25
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This example is all you need to connect.