Appointment embed code not working on Chrome - in Weebly

I’m new to Keap and just setting things up. I am trying to get my appointment booking squared away on my website, hosted/built on Weebly. I got it to work on Safari and Firefox (with a little tweaking to set height correctly), but on Chrome, nothing appears but a blank space. I’m on a Mac. Anyone have ideas on this?
Thank you!
Mary