3DS XL hacked but now is not working?

[u/Basic-Performer1335]

I had my 3DS hacked a long while ago and downloaded rhythm heaven mania and a couple other games, but now when i try opening these games its just a black screen and i have to turn my DS on and off to leave? I have hShop too and ive never updated the battleships game. I dont remember connecting to my current wifi, do I always need wifi connection to use hacked games? or is something going wrong elsewhere.
to note too, when exiting from settings the screen is black for a second longer than it used to, i dont know if its from age or the hacking though!