I use a AR750s as my main travel router and I find it one of the better GL iNet devices for connecting to different access points. I’m not sure who your provider is, but Comcast has something similar and I was able to connect to it with my AR750s. Comcast uses a similar name for their open and their closed access points, and with the AR750s, I have to connect to their open access points to get it to work.

I did this by going into Custom DNS Server and turning off everything except Override DNS Settings for All Clients which I turn on, so my client will connect to the access point DNS server. I then use a PC as my client to finish the log in to the access point. The nice thing is once Comcast registers my router’s MAC address they stop putting up the access point login screen.

Sometimes the provider looks to see if you are re-transmitting, and then disconnects your device, if it see this. The logread command, which you can get to with ssh, can show if that is happening. You can sometimes get around this by connecting on one band and then only turning on the client WiFi on the other band. So for Comcast, I turn on the WiFi radio for 2.4Ghz to connect to my clients, and turn off the 5Ghz WiFi, as that is what I’m connecting to Comcast, as in my area they were only using 5Ghz for their access points.

I am currently running 3.212 firmware on my AR750s which is working better then any of the other 3.2xx firmware I have tested. In someways I prefer 3.105 firmware, as it seemed more stable, but it is a multi-step process that takes a Windows PC to get back to the 3.105 firmware, and 3.105 has some known security bugs.

I agree that setting up and getting a GL iNet router to work in some cases is way harder then it should be. Good luck.