Hello! I understand that you're having trouble with two things in the Tile Explorer app on your WebKit browser with Android 10: rotating the letters isn't working, and you want to change the star icon but it doesn't seem to respond. Is that correct?

To get us started, could you tell me a bit more about what happens when you try to rotate the letters? For example, do you tap a rotate button and nothing happens, or does the app freeze or give an error? Also, about the star icon, is it that when you tap it, it doesn't change at all, or does it change but not in the way you expect?

Once I understand these details, I can guide you through some steps to try and fix these issues. Meanwhile, here are a few general things to check:

1. Refresh the app or browser page: Sometimes, a simple reload can clear temporary glitches.
2. Clear the cache of your browser or app: This can remove corrupted temporary files that might affect functionality.
3. Ensure your app and device OS are updated to their latest versions for compatibility and bug fixes.
4. Check if you're logged in properly to Tile Explorer, as some features may need active account status.

Could you please try these if you haven't already, and share what happens? That will help me narrow down the solution better.