Lol this is the answer they gave me. It's probably an automated response.
Thank you for your interest in Bullet Run! We are aware some customers received beta acceptance emails who are unable to access the game as of yet. We are looking in to this issue and will get back to you as soon as possible!
Thank you for your patience, and if you have any other questions in the meantime please let us know!
CSR Matt G.
Customer Support Representative
Sony Online Entertainment
Wow i was like lets try to log in one more time before i continue playing Max Payne 3 and boom, i made it . Now it's patching the game. I guess it's resolved for everyone not just me, so try and log in.