Hi,
All you have to do is
- download a Developer Edition bundle (I’d recommend the 7.9 LTS version, which was just released last week)
- configure it to point to your database
- provide the extra plugins you’re using (check the Plugin Version Matrix for the lastest compatible versions rather than automatically copying over the versions you used with your 7.6 Community Edition)
- shut down your Community Edition
- spin up spin your Developer Edition
Assuming you did choose the upgrade, you’ll need to fire off the DB migration (details in the upgrade guide), and then you’ll need to log in as an administrator and provide the License Key you previously obtained.
HTH,
Ann