found it !!!! 🎉finally!
it was in the footer indeed... but I kept missing it since it's the only section that had no copy content ...
Thank you for your confirmation that I wasn't going crazy @Ziggy🙂
I am having the exact same issue, not able to remove the Calendly... but cannot figure out which BODY this is embeded to, I looked in every page, footer etc... 😞
Here is the site : https://365coach.me/
any other idea?