it still lets me log into the account in the browser window and in the gmail app and in the email account setting in account. just not in the guided setup for making it the primary account. (i tried to add it as email and sync to think "just maybe it will work" but it only syncs emails :X)
my device is rooted and using stock rom
Here are things I've tried to do (some are from suggestions online that aparently helped others):
remove data/cache from google play store
uninstall updates for google play
unchecking auto time
checking auto time
making sure time is right
checked for software updates
restarted phone, took sims card out and tried logging in
tried to log in through youtube app (which goes through the says black screened log in guide)
turned on airplane mode, turned off phone, turned it back on, then tried wifi and data again.
and i think that is all i have tried. But it tried alot of things so im not sure. Once again. i can log into the account on my phone in other places just not in this black windowed log in guide and yes im typing in the right password and username... i can add pictures if needed.