I work on Autocad LT on PC in the office but have a Mac laptop (I know weird) , I have Mac set up on my laptop and its worked fine for years but suddenly now it keeps preventing access saying that the license has expired. I have been into Autodesk and downloaded latest license details and it fixes it so software opens. But next time I come to use it, same thing happens again, and again, and again. 

The Autobit was useless and when I tried to connect to an agent, it just repeatedly keep taking me to the sign in page and not to a human. 

Any help would be appreciated, other than advice to switch to PC laptop