I just checked again because there was someone in particular who should have a gift subscription, to whom I've been trying to give one for three days. I've tried several times today already. I tried again just now and it's fixed. No more Legacy PayPal Subscription error.
I hate to do a drive-by diary but I have to run off to a meeting and won't be back until at least 9:30 pm. So go to Dr Erich Bloodaxe RN's diary or Kosmail Onomastic for a list of people who you might consider. See all the people with Tech Issue by their names? Hopefully these people ought to all be able to get subscriptions now.
By the way, the person to whom I'd been trying to give a subscription, I did.