Re: NFS 2015 Screenshot uploaded but does not appear in public screenshots
Look here http://answers.ea.com/t5/Technical-Issues/READ-ME-FIRST-NFS-Basic-Troubleshooting/td-p/4908815 maybe helps in your issue.
I think it could be a problem in internet connection.Maybe the game thinks that is too weak to upload snapshots.🤔
You will need a persistent internet connection. Need for Speed is committed to being a live service so they can deliver an ongoing experience that is constantly changing and evolving.
Test your network connection from a PC http://help.ea.com/en/article/connection-troublesh