Zoho CRM and Vonage VOIP Click to Dial stopped working

Zoho CRM and Vonage VOIP Click to Dial stopped working

I can see the phone icon next to numbers, but when I click it, nothing happens. I've tried uninstalling and re-installing the extension, clearing cache, restarting computer, restarting Zoho, restarting Vonage Business and it still isn't working.