Hi there,
We’re up with an issue where we’re receiving the message “There appears to be an error with the configuration” whenever we try and test the newsletter signup forms in the footer and in the popup form on the homepage.
We’ve already had it set up once and it was working, however then our clients wanted to switch to ConvertKit, which we did, and now they’ve requested to switch back to Mailchimp. We were expecting everything to work fine, as it already had, but alas…
We can’t figure out what’s wrong with the configuration, can you shed some light on this for us?

