Problem phenomenon:
This picture is not available in a fully managed device in the Google Photos app.
Solutions:
Please follow the steps below to resolve the issue:
1. Check the available storage.
Need to check the available storage in the Google Photos app. If the required storage is not available , you need to upgrade your storage plan.
2. Check your backup status.
Open the Google Photos app, tap your profile picture or initials, and look for a message about your backup status.
3. Resolve out-of-sync issues.
Open the Google Photos app, sign in to your Google account, tap your profile picture or initials, and then tap Review out-of-sync changes.