When a new version of the Talkdesk's Click-to-Call extension is published, it can automatically get disabled if the permission options are changed. When this happens, the extension is disabled with the message: "Talkdesk requires new permissions".
If this is the case you will need to re-enable it. To re-enable the extension please go to the Google Chrome extensions page (chrome://extensions/) and next to the Talkdesk Click-to-Call extension click "Enable".