I found it a very capable little router, the default GUI is primitive but you can just slap luci on it and go to town

But yes, even this primitive UI supports WISP. I had problems with using two of the three RJ45 plugs; if you check the manual
https://www.gl-inet.com/wordpress/wp...171106_web.pdf they also show using only one and the icons are different. But, I have total confidence it'll go away the moment I spent more than ten minutes with it -- it does have LEDE installed on it, the rest is between easy and trivial. I expect to edit this post through the weekend.