Trying to share .gst

Sent my overflow stashes to a friend I play with, he runs Windows 11 I run 10. He can’t use them, and he says Windows treats a 7-zip file item (i.e. .gst) as if it is unzipped. I say he needs to unzip for it to work? Idk any ideas?

Him needing to unzip depends if you sent them as zip. If it is only a .gst file them placing it in the save folder will do the trick. However, it he uses cloud saves there will be some complications.

I sent them zipped, 52 separate shared stashes by category, for basically infinite stashes, (still need thinning every month or so as I play a LOT).

Thx for the cloud saving tip he may be doing that.