I'm having the same problem as many others and its pretty frustrating. Whereby, mp3s are tagged as "Unknown Artist".

I'm in my second paid month of the U1 Streaming Service, and while its good, I still can't get past this "Unknown Artist" issue. I've been using EasyTAG to "correct" the ID3 tags, but 9x out of 10, they are already correct. I re-upload the songs over and over again but its no use. What am I doing wrong?

I have have some albums where half the tracks are under "Unknown Artist" and the other half are reporting correctly - yet they all have the same tags? It's very annoying.

I've put a fair amount of time in trying to source an answer or a solution that I can handle on my end, but I'm yet to find one. If you can help, please let me know.