Cant activate support

Hi i had the plugin active also on the staging ( and i would like to have also for it in the future ) on testogzero.wpengine.com
i’ve deactivated it in order to have the Active on Production.
I tried to deactivate it and activate on ogzero.org but the interface is still notice me that there is another SITE active with this Code.

There is a list where i could check it ? Maybe during the development i left the key active on some dev ?

Tnx