Unable to import from 3D Warehouse

I’m using Sketchup 2020 and when I try to download any item from the Component 3D Warehouse, I get a message “No internet connection available” However, the internet is working fine on all other programs.
I’m working on a MacBook Pro and never, ever had this problem before about a week ago.
I’m having to search old furniture models from other projects to copy them across.

There have been recent changes that as a side effect means you have to be signed in when getting components from the Components panel. You had to be signed in to get things from the 3D Warehouse window, now that seems to be true for the Components panel as well.

The message about no Internet is misleading. I will tell support to watch out for reports like yours.