Unable to Access Shared Google Docs

I’m trying to attach some links to Google Docs/ Sheets from a Shared Drive. When I attach the link to the task and click on it to open the doc/sheet, Google prompts me to sign in as a different user even though I have shared access under my own account… I’m the one literally connecting my Google Drive in order to add the link. How can I get the link to just open as it should?