How to connect Mailchimp when gravityapi.com has too many redirects error?

When connecting Mailchimp, I login, grant Allow, and then this page gives a too many redirect error https://gravityapi.com/wp-json/gravityapi/v1/auth/mailchimp/redirect?auth_error=1

This page isn’t workinggravityapi.com redirected you too many times.
Try clearing your cookies.
ERR_TOO_MANY_REDIRECTS

I do not have any redirect plugins enabled, the /wp-admin/ or wp-login.php page woirk just fine, and I also disabled the Ninja firewall captcha just in case.

I tried it 5 times before posting this message, then as soon as I posted the message, the 6th time it worked :confused:

I recommend opening a support ticket for assistance if the issue continues for you:

https://www.gravityforms.com/open-support-ticket/technical/