On mobile, 3.3 doesn’t work. Here’s an imgur album of the error messages https://imgur.com/a/skMoVz1
The first two come when opening the game. There’s no side bar. The third one comes when trying to select a race and makes it literally impossible to continue playing. It happens for every race as well.
Try to fix it when you can, but if you’re taking a break or working on the Next version, no need to rush.