If you are using try to install the regular license at multiple locations by changing some lines of code, or using incorrect access code, envato account email then you need to verify your license again. To verify the license simply enter your access code and envato email, the server will verify the authenticity and then you will be redirected to dashboard of your application. This may take around 20 seconds to verify a license.
To know more about license and access code please visit: https://kodemintserviceshelp.freshdesk.com/support/solutions/articles/81000319132-where-can-i-get-access-code-required-during-installation-
If you still face any issue, please raise a ticket at http://support.kodemint.in.