cannot reset active license; error 37

Hello,

I have an active Studio 2019 license but receive the error message 37 ("Demoversion abgelaufen", trial expired) on launch. I currently have no way of reclaiming my license, as the "reset license" button does not show up (as I have learned through browsing this forum, this is due to my extra activation). Is there a method to reset the license or reactivate the product? Thank you in advance.

Erinc Yilmaz