Rockstar Login attempt

Having a friend that has been presented with the log in for rockstar, his log in info is not working even though he is logged into rockstar on his web browser… Now he is not able to play fivereborn at all… (btw, He has a legit disk version of GTA 5) Why is it telling him his rockstar account is invalid even though he can log in on his browser and log in to GTA:O? Is this from the new update? And will a reinstall of Fivreborn files fix this issue?

ADMIN Can you delete this please… Problem has been solved

I had a friend witht he same issue , what did you do?

He logged into rockstar and changed his PW