Google Drive Sync isn't working on my Android device. What can I check?

Open Settings → Device Sync and read the status. Check that every device uses Google Drive and is connected to the same Google Account and that Google Play services is installed and up to date. If the status says to reconnect, tap Reconnect Google Drive and allow access again; Google asks again if access was removed in your Google Account settings. If your Google storage is full, your changes stay on this device until there's room; free up space or get more storage, then tap Sync now. Sync needs an internet connection; the status says Waiting for connection until you're back online, and changes made offline are sent then while WitnessWork is open. If it says Google Drive is busy, Google is limiting requests for a while; your changes stay on this device and sync tries again on its own. If a device uses a newer version of WitnessWork, update every device. Google Drive Sync requires Supporter access; if it lapses, sync pauses and resumes when access returns. Keep an exported backup and the device with your latest data before rebuilding Google Drive data. Contact private support from the Help Center if syncing still fails, and keep householder details out of public reports.