Holding the money hostage for half a year on a 20 year old account? Not surprising. Paypal and their other entities like Ebay are pretty shit when it comes to nuance and their impact on others.
Had a 15 year old Paypal business account (parent started it and I took it over ~7 years ago) and last year they shut it down because I, as the new owner, was not 18 when the account was created. Nothing from the support but "computer said you bad, nothing we can do".
In Ebays case I sold an item, got the regular email from Ebay (DMARK/SPF/IP verified) that they had received payment and was holding it until the item had been delivered. Then a week later I got another email from them saying they had blocked the buyer for abuse (i.e. a fraudulent transaction to them) and that I shouldn't ship the item they told me to ship a week ago. After 2 months of trying to get through to the support they just claimed that someone spoofed their DMARK, SPF, and servers IP. After explaining how impossible that would be their 'proof' that it was 'spoofed' was that there should be a copy of the message in the Ebay inbox where, after the reply, all messages about the auction ever existing were suddenly gone.