Here's a note about filling out the donation form, since this is a donations site rather than a ticketing site, and things may work a bit differently.

Anne didn't explicitly say so, but there's a checkbox at the bottom of the donation page labeled "I’m happy to share my contact details with Anne Lister for the purpose of thanking me."

I assume that one needs to check that box if one wants Anne to send the Zoom link, even if one doesn't need a thank-you note.