Doesn’t work consitently – Sudoku Master Edition: Logic Review

I am not sure what version I am on. I assume it is the latest since I have my iPad set to update apps behind the scenes. Recently, after playing the game three or four times, the sceen goes black when I open the app. I think this has something to do with the company they have partnered with to run ads. I have to delete the app, download it again, and I can play it for a few games. This makes the app very user unfriendly and I cannot recommend it until we find out what is happening and correct it.
Review by BruceNO on Sudoku Master Edition: Logic.