Re: My rank went from 23 to 15! Why??

First off, let me start by saying welcome to EA’s “Answer HQ”.
Answer HQ isn't just an ordinary message board or support center. It's a new approach to our community experience and a fun way of helping other players or to get answers (from players & experts)and get back in the game!

Try to disable Origin's cloud synchronization.

https://www.origin.com/en-ie/news/origin-how-tos-enabling-cloud-storage