Hi – sorry you are experiencing difficulties.
I do see the following error in the console, so based on what you are telling me my guess is MD Page Builder also adds Google Maps support:
Warning: you have included the Google Maps API multiple times on this page. This may cause unexpected errors.
Would it be possible for you to touch base with the plugin author and ask if there is a means of readily disabling map support in relation to that plugin? If for instance they can provide a snippet to help you do that we can probably complete the puzzle, as it were, and provide some additional code such that their own Google Maps integration is only disabled on event pages like this one.
Let me know if that would help 🙂