apparently the client is unable to connect to the edge router.
here Tunnel unable to reach local router you proposed to check the router config. Mine looks as follows:
listeners:
# bindings of edge and tunnel requires an "edge" section below
- binding: edge
address: tls:0.0.0.0:3022
options:
advertise: fsn-ztna01.xyz.de:3022
connectTimeoutMs: 5000
getSessionTimeout: 60
- binding: tunnel
options:
mode: host #tproxy|host
fsn-ztna01.xyz.de is publicly resolvable and 3022/tcp is opened in the firewall.