Changing the PayPal conditions / account

I have handed over the management of a library thing library and tinycat subscription to someone else. The email address etc has been changed. But the billing still goes through yearly to my PayPal account. I have followed the link https://www.librarycat.org/admin/billing/overview and the related help, but it doesn't allow me to change the PayPal account linked to the auto billing.
In exploring this, I have ended up changing the payment set-up to 'yearly one time' - which we really don't want. But it won't change back again.

Please send you reply to the email address listed with this account, and also to mrschappo@gmail.com. This is my address. The other is the new administrator's address.

Many thanks
Susan

Hi Susan,

Thanks for reaching out—in the future, if you'd like to email your requests, you can do so to tinycat@librarything.com. I'll reply to you via email as requested.