Hello! So i've tried again , It can get to finish downloading but now says this.
Android works in very mysterious ways sometimes. Sometimes it has problems installing new versions if it encountered a version with the same version number before. I could suggest deleting the current version and installing the new one, but that would likely delete all the saves and other data.
I'm thinking of uploading the future updates to a different place, but Patreon has the benefit of performing a 18+ check for us.