The reason it’s invalid is because your site has Event Espresso version 3.1.37.12.p, and your account has an EE4 license. The EE4 license is only valid for upgrading to Event Espresso 4.
If you want to continue using Event Espresso 3 you can switch to an EE3 license on your account page.
The support post ‘License key says invalid, even after reset. Version 3.1.37.12.P’ is closed to new replies.
Have a question about this support post? Create a new support post in our support forums and include a link to this existing support post so we can help you.
Support forum for Event Espresso 3 and Event Espresso 4.