Update: Resolved - Reboot the modem, until you can sign into your Battle.net account. It should show that you are online, (not offline mode)
Hey, I bought the Ultimate edition, but keep receiving the error There was a problem logging in (Code 7). It has been happening since 6:30 PM today. (Over 3 hours)
If you have problem after few hours:
You need install beta version and login in beta (generate Register Key), after run nonbeta
(7, 1310 now done and i play).
Just got this same issue again @blizzard please look into this and fix as I closed my ticket yesterday as it strangely started working again (and now its not longer working)
Cannot go in online mode or access game due to code 7 error, I have tried all the suggestions above and all the suggested actions via the following support page