Widespread Invalid Sync Token Error

[JBGreenpaths]

Hello,

I have 5-6 apps that have some users that are experiencing an invalid sync token. Anyone else experiencing this? 

- Not all users are having the issue 

- Device types are both iOS and Android

- Waiting on a confirmation on whether the mobile browser has the same issue.

[1minManager]

Yep, getting it all the time on big apps or ones with poor/mobile internet connections.  I think the cause is the sync on the phone/tablet timesout.  But when it restarts the connection the server says that a sync is already in progress,