Lucense trouble

Hello community, I have  the follow problem: recently I've got a new PC, and when I start installing SolidWorks on it, the software shows me that I can't activate it because I have another activation on my old PC. I deactivate the license on my old PC and still again I can't use SolidWorks on my new PC because still detect another licence somewhere else.If anybody can help me with this I would be very graetful.

Edu SOLIDWORKS ​​​​​​​​​​​​​​