I have a GL-AR750s / Slate with the latest V3.100 firmware, and am running into the following issue:
When connecting to a guest network with a 192.168.x.x address I never am able to successfully route traffic over the Wireguard (in client mode). I would like to note that my Wireguard network is 192.168.20.x/24 and the hotspot’s network does not interfere (e.g. 192.168.6.x/24). I have a similar Wireguard configuration on my phone, iPad & Mac laptop, and do not run into the same issue.
Wireguard is a VPN, and VPN implies routing, and your Slate is a router.
Can’t route within a within a given scope…
I use a 10-dot for the WG connection when going point-to-point (e.g. WG server at Home, and WG Client on my USB-150), and there, things generally work.