I cannot get any version on my unity hub and my creator companion needs to have the latest version however each time I try to update it gives me Validation Failed and cannot get it, is there a fix for this because I have no idea how to get this to stop and where I can actually update and be able to download again 
If I understand correctly, you still have an opportunity to install without Unity Hub in Downloads section of archives: Download Archive
What do you mean by archives?
Mentioned website page
wouldit still work with creator companion?