VPN Cascading on GL.iNet routers

You're right, sorry about that. I’ve actually referenced my device model and firmware version in a more recent thread here:

I recently bought a Slate AX, and the first thing I did was update it to the latest firmware (v4.7).
When both the VPN server and VPN client are running, I’m unable to connect to the server. However, if I disable the VPN client on the router, I can connect to the server without any issues.

I then downgraded to version 4.6.11, and everything works perfectly.
To verify, I tried upgrading to 4.7 again, but the issue reappears, I can’t connect to the VPN server while the client is enabled regardless of whether VPN Cascading is on or off.