Cannot activate two wireguard connections in VPN Fusion

[b82m]

I am trying to setup to WG connections in Fusion based on Surfshark. Unfortunately only one wg connection works at a time.
If I look into the protocol, the only message I find is:
rc_service: httpd 2426:notify_rc restart_vpnc
Nothin else.
Any idea? I am already using two separate key, and subnets. Router: AX86U Pro
Here are my two configs:

[Interface]
Address = 10.14.0.2/16
PrivateKey = <My FIRST key>
DNS = 162.252.172.57, 149.154.159.92
[Peer]
PublicKey = <public key>
AllowedIPs = 0.0.0.0/0
Endpoint = de-fra.prod.surfshark.com:51820


[Interface]
Address = 10.15.0.2/16
PrivateKey = <My SECOND key>
DNS = 162.252.172.57, 149.154.159.92
[Peer]
PublicKey = <public key>
AllowedIPs = 0.0.0.0/0
Endpoint = de-ber.prod.surfshark.com:51820

 

[b82m]

I found a solution in the meantime, just leaving it here in case someone else has challenges with this.
VPN Fusion is simply a very unintuitive piece of software. Here are my lessons learned:

• I first created a connection without adding clients - just for testing the connection itself. The app then stays in the state "connecting...". You have to add at least one client, then it also shows "connected". (which imho does not make sense - the wg connection should work without any clients connected).
• It seems that it only accepts subnets gte /24. I was using /16 subnets first, which didn't work. (ok, but I doubt that someone would really need this for a home router anyway)
• A default VPN connection combined with a killswitch (via whitelist network filter) will not work. The only way is to set the default connection to the non-VPN internet connection, and then manually assign all devices. (or maybe someone has other ideas?)