This error occurs when the connection between the Zoho App and the plugin failed.
Attempt a re-authentication by going to Zoho API Settings and re-authenticating the Zoho application that experienced the error. Ensure the connecting Zoho account and WP admin are logged in to the same browser.
Users on the front end will get this error when logging in even with the correct name and password if: You have exceeded your API Limit and have not upgraded. See API Limit Exceeded The Contact is associated to an Account. The API connection has ...