So I have been trying to log into the beta for a few days now and everytime I try it tells me authentication failed please re enter your cridentials.  Now i played in both preview weekends and i know my password is right bc i am able to log into account management, any ideas on what I shoudl do?

-Check to be sure your subscriptions through WAR at their official website are still activated, if not contact support and present your problem shown.

-Be sure you've activated all the required codes to be eligible in the Beta and followed the steps shown on the Pre-Order page off the WAR website.

- If the two above didnt work id suggest WAR Support because it'd be an internal issue within your account and your subscriptions.

Good luck ~

you did not specify NA or EU beta.
nor if you checked the Mythic accounts site to confirm if your OB key is registered.
My CB/Elder account can log in fine to the NA but not the EU beta.

Make sure you run the warpatch.exe and not the other executable.