Integrating Sharepoint into Teams

Hi There we are currently trialing Teams in our company and trying to integrate as much of our day to day tasks and activities into Teams as possible. I am struggling to integrate our current Sharepoint site (Folder level) into Teams using either the "Document Library" or "Sharepoint" Apps within Teams.

When I am pasting the Sharepoint link into the URL space it is saying that the URL is not compatible.

URL looks like this where xxxxxxxxx = our company site

https://xxxxxxxxx.sharepoint.com/:f:/r/Client%20Delivery/Australia/Bendigo%20and%20Adelaide%20Bank/71999%20-%20BBK%20Data%20Masking?csf=1&web=1&e=navfsB

Cheers

Paul