'You have exceeded your allowed activations' message on 2nd machine

Hi, I’m having an issue using my Sketchup subscription licence on my 2nd machine (2015 MacBook running Big Sur)… I’ve reinstalled twice but the same message appears. I have deauthorized all previous instances devices and instances. It’s working fine on my iMac but not my MacBook… Can anyone help?

Did you follow the steps in the Need more help? article?