i use these AP's with First spot without having any problems and it works really well.
What i did was to get rid of the cloudtrax firmware on the APs (i didnt want to use the Cloudtrax interface) and ...
I run a camp of 400 users and have a problem with only Samsung S5/S6?
it connects to the wireless without a problem, but what happens after that is, the Samsung hangs and actually starts heating up. ...