Mar 17, 2020, 22:1103/17/20
When this happened to me, I erased all data and cache. After downloading from the "loading screen", there's a little "Login" on the upper right. Click there and login with your facebook. I recommend creating a Plarium account, link to facebook and then play.
First time I tried that, I also lost my progress, so I really don't remember exactly how did I created the account on PC, but today I play both mobile and plarium pc.