Hmm. I can't actually find the link to start using it to try it out. ? It offers a Free Demo that is behind some kind of details harvesting form. I don't want a demo. Is this usable enough to move a small (6 people) team away from google sheets ? hard to say since i can't test it and it doesn't say what the cost is. Stop hiding your shit behind hard to navigate/use/privacy invading bullshit. Just let us use the stuff. If you must gimp it, do it in a way that doesn't stop us using it first.
Is your team looking at the cloud version or a local install?
If latter would suggest checking current version of LibreOffice (which is Collabra Office Classic) as a local (i.e. on client computer) install. If former, then I'd imagine you will have to fill the form in to get access.
Edit: https://news.ycombinator.com/item?id=46901100 Another commenter has summarised the differences between Collabora Office and Collabora Office Classic (aka LibreOffice) for us
On my screen, the words "Download Now" are the biggest on the page.