ios 16.4.1 update
Since the recent update, I'm unable to access the Apple ID, iCloud+, Media & Purchases on my iphone.
Question marked as
Do you have a MDM profile?
If so, contact your company - IT department.
or
Is it a private iPhone, see -> Use parental controls on your child's iPhone, iPad and iPod touch
Use parental controls on your child's iPhone, iPad and iPod touch – Apple Support (UK)
- Check restrictions -> tap Settings -> Screen Time -> Content & Privacy -> scroll to Allow Changes.