2 factor authentication code stuck on page and doesn't send SMS code

Can you please help? When I'm trying to login it goes to the 2 factor authentication page and when I try to send a code it's just stuck on the page and not sending the SMS code as well. I already tried using different web browsers and cleared cache but still not working. I already sent an email to Mailchimp support but there's still no update. Can you please help me, I will need to schedule the email ASAP. Thanks!