Unable to open files

I closed the file I was working on this morning and went to open the next file I need to work in only to be told this wasn’t possible.

How is my device suddenly not authorised? I am signed in via Trimble, have tried using the manage licence tab, everything seems to be ok but I can’t get sketchup to work/open anything.

THIS IS URGNET! I HAVE SO MUCH WORK TO DO AND DEADLINES TO MEET.

Hopefully someone can please help!

Have you tried the old Sign Out and back in? Much like turn it off and turn it back on.

I have, still no luck!

With windows the normal start to trouble shooting is reboot the computer, this is not normally a thing done with Mac, but it has been known to work on occasion, especially when you have a habit of never shutting your Mac down.
So just a thought from a non mac user.