The higher quality versions downloaded as a Go+ user have corrupted file headers. While you may still be able to play the file, depending on the music player you likely won't be able to seek to a time. (And these files can become unplayable over time so good luck)

My account was banned

This addon simply DESTROYS the quality, 70% of quality is lost, do NOT waste your time with this extension

Does not work. Shows "ERROR" and when you hover over it says "Track is not streamable". This is the case for every song on that site that I have tried this with. From different artists and the same artists.