pengfei0320 Said:
"iPad 'Purchase Date not Validated':When checking the serial number, 'Purchase Date not Validated'. Then I entered the purchase date from receipt,' We’re sorry, but we are unable to validate your date of purchase. Please contact Apple Support'"
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Contact Apple Support:
Do as instructed and contact Apple Support. Perhaps there is a mislay in Apple's device database.
Apple Support Contact Info:
Note: Phone calls are taking a bit to go through at the moment, due to lots of calls. With the Coronavirus Pandemic, many are at home at the moment, with much time on their hands to contact Apple. So, just stay on the line, and you will get through :)