Fail to upload data

I once tried to reconnect with Apple Music account but it failed. Then I tried to disconnected first and then connected again. But ever since then, it keeps asking me to upload my data again to unlock full features. The problem is that the app already has my all data and I do keep trying to upload my data again, it just keeps failing. My question is that do I need to delete my previous data and upload the new data? How do I get it right?