Howdy Andrew,
It’s nice to meet you, and welcome to our forums. I am happy to dive into this in detail. Your theme is replacing the PHP $index value of our google maps ID with one of it’s own, which is causing the Google Maps JavaScript to not run. Would you mind sharing a copy of your theme with me? From there I would like to see what is necessary to get this working, and I can wlak you through those steps.
If you don’t mind sharing your theme, please email a .zip copy of it along with a link to this thread to support @ this website. Would that work for you?
Cheers!
– Brook