Paypal supports TOTP everywhere, but it’s hidden on a page not reachable via any of their sites, in their old site, and you need to run a custom python script to even generate the token you want.
Care to share a direct link to the TOTP configuration site though?
And a blogpost explaining the backstory: https://www.cyrozap.com/2014/09/29/reversing-the-symantec-vi...
But sure, for the average user, it’s basically useless.