wireguard S2S between opnsense and fritzbox. Connection up but "no access"

[Onkel-tobi]

Hi,

i am just switching from IPSec to Wireguard for my S2S connection to my father.
Attached you can see the rough overview.

The link is shown as up and running but I can't access for example the Fritzbox on the other side.
connection shows:

Code: [Select]

peer: blubbblubb
  preshared key: (hidden)
  endpoint: [IPv6]:50040
  allowed ips: 192.168.200.0/24, 192.168.161.1/32
  transfer: 0 B received, 1.59 KiB sent
  persistent keepalive: every 25 secondsRouting is done automatically, correct?
At least I have a route like 192.168.200.0/24 via wg2 (interface s2sPapa).
I can also see packages going out (see screenshot2).
What am I doing wrong?

Thanks for any hint,
Tobi

[schnipp]

Last weekend I successfully migrated an IPsec VPN connection between a Opnsense and a Fritzbox 7490 to wireguard due to security issues and handshake performance of IKEv1.

Please share your full VPN configuration of the both endpoints (without secrets)