Back to the OP issue
When was the last time (before the new chrome book)
That you access that account with each of the five devices you said you have used ?
It appears you got lucky before, and they I've changed something in their system that has caught up with you,
Three devices is the LIMIT and nothing is going to get your chrome book access except removing some of your other devices from the access list, or paying the money they want
You won't be the only one affected by this
But so far the only one who is posting here about this