You are using Sketchup Pro on to many devices

Each ‘seat’ of your subscription plan must be tied to an individual Trimble ID.
Each Trimble ID may activate on two (but can on three, as you have discovered)
Check this:

Admins and Account owners can not manage the individual devices of their ‘members’ or seat-takers, they would have to do it theirselves while going to their own AMP (‘My Products > View Included Apps > SketchUp Pro > Manage Devices)