Paranoia probably; PayPal sent a nastygram saying PLEASE CHECK YOUR SECURITY SETTINGS ARE UP TO DATE BEFORE JUNE 30 OR WE DISCONTINUE YOUR SERVICE, which I thought might be spearphishing, but it's legit afaik. I used their test page and got the official "no, it's cool, PayPal works" message, which means I'm still worried that they're gonna dick me over in 16 days.
@makyo Thank you for the reassurance!