Zoho writer, sheets, etc integration with google docs

Zoho writer, sheets, etc integration with google docs

I'm trying to setup my google docs to use zoho writer, sheet, etc as the default editor. I've followed the instructions but whenever I click on a document to open it I get the error message

"You're already logged into Zoho account that is not associated with the currently logged-in Google Account. Click here to logout from Zoho and view the document. For any queries please do contact us at support(at)zohogadgets.com "

I've tried this on ChromeOs with Chrome Browser and Wondows 7 with Firefox browser.

Can you assist please

Thank you