Twisty Timer is a material design twisty puzzle timer for Android. It uses the TNoodle library to generate scramble sequences for all current official speedsolving puzzles.
If you still have this issue you can just reinstall the app and it should fix it. Unfortunately you will lose your solves - I lost 7.4k solves because of this bug.
Can't export/import. The error message shows "Unfortunately, an error occurred while exporting. Check your permission".
I already have Storage permission (the only permsission there) checked.