I'm on the Android build. I get completely locked From progressing right after I enter the tower. I remember that wasn't The case previously, but even then I got kicked out by some kind of bug.
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Android build has always had issues after a certain point.
I've tried to pin these down, but it really seems like a phantom bug associated with the build process.
As such, I've stopped updating android versions of the game. Instead, you can use Joi Play to play on mobile.
Check out the latest release post (or the main page of the game) for instructions on how to set up Joi Play.