Playback Isn't Working And I Can't Upload my score to the website.

This past week I uploaded a score I had finished onto the Musescore website. I made some small changes to the song a few days later and tried to update it on the website but it wouldn't do anything, so I deleted the score and tried to reupload it. Now it won't even upload at all.

I've also just found out that the playback isn't working either. I try to play my score on the Musescore app, but the bar just stays there and no sound comes out. I thought it may just be the file so I made a new score, but the playback still isn't working.

I've redownloaded the app, restarted the computer, and reset Musescore to its factory settings (although I don't think I changed the settings to begin with) but nothing seems to be working.

I've only been using Musescore for about a week now and would rather not have to go back to Noteflight so if anyone knows what's happening or how to fix it help would be appreciated. (I'm on version 4.4.2 btw)