You can get free updates to Act 1 here as well! Whenever we release a new version, you should be able to come back here and get the new one as long as you're logged in with the same account you made the purchase with~
I'm sorry about that. It's possible that area is using too much RAM. We have a lot of different characters in the Dojo and one of our tasks for Act 2 will be to revise that area to reduce memory usage. Some phones just won't be able to handle it currently. If you're unable to proceed, you may contact support@itch.io for a refund. We will update the store page to warn about the memory issue. You may need at least 6GB of system memory. We'll try to get a more accurate account of this, but it depends on our access to different devices, and the only Android I have has 6GB of memory.