I have also been having the same problem. I have “verified” a number of times, I receive the confirmation email, and on the Key Activation tab it says:
Your key is valid
MailPoet Sending Service is active
MailPoet Premium is active
But if I try to send a mail I get the message “You’ll soon be able to send once our team reviews your account” — and I am not able to send.
If I try to re-send a confirmation email to a new subscriber, I get an “unkonwn error” message.
While in WP it seems as if my account is approved and active, if I login to MailPoet, my account status is: “You’ll soon be able to send once our team reviews your account. A confirmation will be sent by email to you.” — so clearly something is not working here..
Please note that this situation has continued for nearly a week..!
If this is not fixed soon, I shall have to move to a different plugin.