Removing classic license from a formated computer

Thanks, I appreciate your help!

Hello @colin have the same problem.
I have desactived my licence on my old computer, but my new computer say the licence is used on too many computers. It’s like my desactivation ain’t working.
I have Sketchup 2018.
I don’t remember if it’s ralated to or

I will message you to ask for more details about the license.