Mac using Icloud Archive and all powerpoint files are missing

Suddenly at the end of November, rather than my Mac filing everything under 'Documents' it has started to use 'I cloud drive (archive) 1'. When I go into Finder this is all I see. Under the Finder icloud drive tab there are huge amounts of files missing completely.

When Finder takes me to the icloud drive (archive) 1, most things are there, but all my Powerpoint files have disappeared. I can see them if I log into our icloud.com account, but how do I get to see everything through Finder as usual?