It might be the program you're using works.
Doesn't seem to open with 7zip.
Doesn't ask for a password, just errors out.
Okay, updating 7zip to last "stable" version (2019) worked, so it probably is a file extractor issue.
My bad, should have noted what I was using.
Archive Manager (for Gnome)
Says Copyright © 2001–2014 Free Software Foundation, Inc.
Don't know if it is that old but current versions seem to be several ahead (albeit without dates for the release and I am too lazy to go looking).