I have the exact same problem. I bought the SF1200 thinking it supported EAP networks (as not in the list), but it turns out with the gl inet interface it does not. However after installing the luci interface and connecting there to the EAP network (Network>wireless>scan), I succefully connected to the EAP network.

However, speed are limited to 20Mbps even though my network can do much more and I don’t know what is the limiting factor here.