Ads; previous purchases can’t be restored – Sudoku of the Day Review

I bought the app previously but now it fails to restore previous purchases, so it now shows ads after I already paid for the app. Hasn’t been updated for iPhone X display support either so it seems like the app has been abandoned, which is especially disappointing as I’ve been buying Astraware games since Windows Mobile.
Review by bithaze on Sudoku of the Day.