I can't log in to my sketchup pro

You have exceeded your allowed activations
To continue, please sign out of another instance of SketchUp, or use the link below to sign out of all versions you have authorized in the past. Then, click the profile icon above to sign out and try again.

how can i logout from other computer if i don’t have acesse to them?

a quick search using the error message :

https://forums.sketchup.com/search?q=You%20have%20exceeded%20your%20allowed%20activations%20order%3Alatest_topic

like that one :

Best is, there is a video showing you how to deauthorise everything