"Device Policy Alert - Looks like your device isn't updated with the latest security policies. Please try again later."
Login into Google Gsuite Admin and click on Devices.
On the left sidebar menu. Click on Setup
Menu
On the setup screen, at the bottom, you can find the Apple Push Certificate Option. Press that.
It will open the Apple Push certificate Screen. It will contain a link to renew Apple Push Certificate.
Renew consists of three steps.
This app shows your data is synced.