One problem I encountered while trying to install the Android version: It gets blocked by Play Protect for having been developed for an older version of Android.
I've never heard of that before, sorry about that! I'm not sure if there's anything I can do about it. I could try a newer version of ren'py, but changing versions mid-development is usually a bad idea!
There's a new update coming soon, if that has the same issue you could try using joiplay to run the PC version.