: You can also update the associated IP address directly through your MailWizz account where your licenses are listed. License Types License Type Best Use Case
in your MailWizz dashboard and save the page again to clear any persistent errors. Checking License Status mailwizz license key work
A key point in understanding is realizing that validation is not a one-time event . MailWizz re-validates your license key periodically via a cron job (usually every 24 hours). : You can also update the associated IP