I forgot the restriction code password

If you can't remember a restrictions passcode that you set on a previous version of iOS, or you forgot your Screen Time passcode, you need to erase your device, then set it up as a new device to remove the passcode. Restoring your device from a backup won't remove your passcode.

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Iskony wrote:

I forgot the restriction code password

If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support