You could try reinstalling SketchUp however I wouldn’t be real confident that it would change anything. Doing a repair of the installation won’t hurt anything, though. Reme,ber to right click on the installer and choose Run as administrator, then the Repair option. After that, do a power-off reboot.
You haven’t done a power-off reboot lately have you?
I just did another one. I think I also did a repair earlier today.
I just went to Firewalls and “allowed” Sketchup through the wall. Nothing….
A new Day! It is definitely my laptop…..my desk top is working correctly with Trimble Connect. 
Well, that’s something, anyway.So what is blocking access on your laptop. I’m guessing there’s some ad blocker or anti-virus type thing running that needs to have Trimble Connect and SketchUp whitelisted.
I think it was actually the way that I had signed in to Trimble. Honestly, it’s a bit over my head! LOL But if I use Chrome to sign in, everything works, if I use Edge it doesn’t. My work uses Edge usually, but I like Chrome better anyway. Thanks for your help!