iCloud sharing does not work between M1 Macs
iCloud file sharing between Macs does not work. The person I'm trying to share with (also on an M1 Mac) when they click the share link get the message "This item is no longer being shared".
This is untrue. The folder is marked as shared on my Mac.
There is so little documentation available on how PRECISELY you are supposed to use iCloud sharing, that I have no idea if this is a problem with the way I have set up sharing at my end or a problem at their end.
Could anyone point me to any technical support pages on the web that detail the "dos and do nots" of iCloud file sharing between Macs. Apple provides short shrift in terms of detail, being more concerned with selling the "feature". And iCloud itself provides little to no user feedback.
Thanks for any help.
p.s. We are not AT ALL interested in sharing with iOS or PadOS devices — I notice that this it what nearly all articles on the web appear to focus on.
MacBook Pro 16″, macOS 12.1