Playback problems

I don't understand why for some strange reason I can't access any playback on my scores. I downloaded and subscribed to the new version thinking that would fix it. NOTHING!!! I watched countless number of videos, read countless answers here talking about "going to preferences and changing I/O" or clicking on edit and selecting the "playback panel". None of that works for me. I am left wondering if my Musescore is different from the one everybody else has. I am really frustrated.