How to connect Mailchimp when has too many redirects error?

When connecting Mailchimp, I login, grant Allow, and then this page gives a too many redirect error

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

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:

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