Hey Koen
They claim that they are unable to access the login page.
In the app, it only shows the page once it is loaded, in the meantime you are seeing a loading page progress bar.
There are 4 possibilities here.
First: The page is down when they are testing. This always happens during our nightime.
Second: The page is not accessible from where they are testing.
Third: their connection is so crappy it takes ages to load the page, where they would get the impression it's not loading but are, in fact, impatient.
Fourth: you can't request an oauth login url without a MV connection
I distibuted the same app to my testers again yesterday (all in Belgium) and everybody confirms the page IS loading.
So, I've contacted Microsoft to ask for more information.
But, if any of the obove assumptions might make sense, let me know.
Regards
Jan