we installed a 192.168.1.55 VPN box to access the 192.168.1 green network.
the VPN address range 192.168.2. 1 to 3
the blue network address range 192.168.3
Stations located in the green network access the NAS in the blu network without problem.
When the workstations switch to a VPN connection they can access the resources of the green network but can no longer access the NAS blue network.
I tried an IP rule (192.168.2. 1 to 3) or Mac from the station to the NAS address without result.
I tried to disable the workstation’s firewall without success.
I tried turning off my green to blue block everything rule.
I would look at the the firewall logs when you try to connect from green to blue.
Your VPN wiregaurd is probably not NATing your connection. Your Remote user may appear in a alien IP range and get blocked from going to blue.
Just a guess.