The machine accessing the router is not using the VPN (e.g. a computer in the office)
There is a port forwarding rule from WAN->LAN in place:
I enabled the option “Allow Access WAN” but no difference with activated VPN-Client.
Screenshot from protocol for successful connection (with deactivated VPN-client:
When I activate VPN-client I don’t see anything in protocol but receive from the connection computer: