Sketchup and Layout 2021 Keep Signing me out

Hi

Just wondering why Sketchup Pro and Layout 2021 keep randomly signing me out.

I’m on a Classic License.

I open Sketchup or Layout.

Profile Icon in top right of Welcome shows me as not signed in sometimes.

I click to sign in. I sign in.

I use Sketchup or Layout.

I quit Sketchup or Layout.

Then when I go to reuse them again, sometimes I’m signed out and have to sign in again. It seems random.

Would appreciate any ideas.

Kind regards

Mike