Solved!! Kind of. After having all of the exact same issues you have described I decided to try out an older version of WAB (1.3) and what do you know it actually worked!! The main difference with 1.3 was that instead of just looping back through the login screen it went to another screen which said it did not trust the security certificate or something. Within in here I was able to allow WAB to bypass the need for this and it works everytime. It's still not 2.0 but I least I have something working now. Hope this helps
... View more