Upgrade SonarQube Developer to SonarQube Enterprise

I´m new in SonarQube
I installed the SonarQube enterprise version following the steps of the following link:
Upgrade Guide | SonarQube Docs
But when I try to enter the license I get the error that I still have the Developer version.
Any advice on what I could check or do?

Hey there.

Please get in touch with contact@sonarsource.com who can help you with any license questions.