● If a message says "your account has been disabled in the App Store and iTunes Store" or "You cannot login because your account has been locked", you might be able to request reactivation by tapping Continue right from the alert. If that does not work, Apple provides a link for this specific issue. Tap or click here and choose a self-help or contact method ➞ https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362 .
● According to various posts, Apple may also permanently lock accounts for various reasons (very broadly outlined in section VII-B of Legal - iCloud - Apple ). If none of the above apply to you, that may be the case here. If it isn’t apparent, contact Apple and ask if that is the situation, but don’t expect them to tell you why. You are likely doing something to trigger security measures at Apple's end. You will have to see if your activities meet any of Apple's conditions in the support article and then stop doing things the way you have been.
Apple can completely reset a device if a person can provide sufficient evidence of valid ownership. Check the requirements and steps at: Activation Lock support request - https://al-support.apple.com/#/additional-support Apple says, "Proof of ownership documentation is required," but does not detail what currently constitutes proof other than it “must include the product serial number, IMEI or MEID.” Apple may typically require the original receipt* issued by Apple or an Apple Authorized Reseller. If Apple resets the device this will give you access to the device but won't restore access to the account used to lock it. There is nothing that can be done to expedite an Activation Lock request.
*Apple recommends you "Keep your receipt after you buy an Apple device" --> Keep your receipt after you buy an Apple device - Apple Support
