@David Thanks for the prompt response. As you suggested, I turned off uBlock Origin extension for this website (calendly.com) and reloaded the page. The chatbot pop-up appeared.
You probs should not depend on cookies to run the chatbot. Nevertheless, thanks for fixing it for me!
I have tried to get support for a billing issue for more than 6 months. I continue to get billed for two instances of “teams” which I do not use nor understand what the hell it is. No matter how many tickets I place or emails I send requesting support, I get no response. So yesterday I finally contacted the Attorney General for the State of Georgia and learned that there are numerous complaints about Calendly not responding to NON-Enterprise clients. If anyone else has this issue, contact the AG in Georgia and they can help direct you.