@MojangSupport could you please take a look at https://bugs.mojang.com/browse/MCPE-101217 … -- Minecraft on PS4 simply doesn't launch for a bunch of folks (yours truly included). Thanks!
We apologize for the inconvenience, but this is currently a known issue. The team is currently working on a fix that we hope to have out to everyone as soon as possible. Thank you for your patience while we work on the solution! ^SM