Hello. I'm also not seeing tags. Specifically. I'm in Folder View then sorted my items by tags as my 1st sort option (followed by Priority and date). When going back into the view, it shows the 15 items have no tags. However, in reality each task does have a tag online.

I would love to see tags

I think the invitation email says Tags are not yet fully implemented, so this might just be something that hasn't been pushed yet. It's a pretty big thing (for me), so I hope they get to it soon, but I do believe this is expected.