How to rebind documents?

I started working on a document on my iPad and apparently I pulled my documents from Google Drive, not iCloud… so now that I want to work on my notebook on my macbook, the doc is missing and I can’t find a way to rebind it.
I’d go to Manage and click on the connector icon but I don’t know what am I expected to do next… I click on a document and it just gives me a note saying “rebind… document_name” and just a Cancel option.