MailChimp Subscriber Form

Hi,

I used beaver builder to build a landing page for my newsletter. I have a subscriber form which connects to my mailchimp through an API. It was working great for many weeks, but all of a sudden users stopped being able to sign up and started getting an error message. And now, when I go into the beaver builder, I can’t choose a list under my account. Does anyone know how to fix this?

Thank you,

-Pat