Not able to turn on app refresh.Greyed out

Here are 2 possibilities:

• You have Low Power Mode turned on
• Screen Time restrictions are preventing you from turning it on. Go to Settings > Screen Time > Content & Privacy Restrictions > Background App Activities, and make sure that is set to Allow.

● If an app or feature on your device is not working, not appearing, or is restricted (grayed out), a frequent reason is it may have been disabled using Screen Time, or by an IT administrator if you are using a device owned by an employer or educational institution.

- Read this support article If your Apple ID or other options are greyed out in Settings —> If your Apple Account is grayed out in Settings - Apple Support

Tap your Settings app > Screen Time > Content & Privacy Restrictions > scroll to Allow Changes and turn on.

- If the device is managed (Settings > General > VPN & Device Management), contact the IT department that is doing the managing.