Map Controller just showing blank map

My map controller device used to work before the update for the sudoku map I used it on already it no longer works for any maps I try it on though. It won’t work regardless of anything in the instructions. (It used to work before the update) so it stopped working and nothing makes it work again. Obviously if the instructions worked I wouldn’t be here (not trying to be mean or anything, it’s just if those worked I wouldn’t ask on here.)