Still fighting this issue. If I delete user data, it works ONE TIME. After that, "Server error. Please, try again later"

I've tried deleting the app and reinstalling, but the results are exactly the same. I get ONE good sync, and everything after that gets me the "Server error." notice. This is very frustrating since I use Eversync to sync between my phone and my computers. I'm so tired of having to do the delete/resync dance with a service I'm paying for.

I've been having the same issue. Only affects my Android devices, but causes sync on all devices to get locked for a while after failure to sync. Tried reinstalling several times. Only occurs (afaik) when I try to manually initiate sync.