Login (auth) not working on IOS 8.4


One of my co-workers updated the version of IOS on the device (ipad) I am using to test my app to 8.1… before the update, I was able to log into the app but not anymore. I decided to do some research and found this -> https://discussions.apple.com/thread/6538068?start=0&tstart=0

So I decided to update the device to the latest version of IOS (8.4) but the login still doesn’t work. I’ve also tested the app using a lower version of IOS (7.1.2) and it works perfectly fine there… Has anyone experienced this before?