If then map doesn't load at all and you see the following error in browser's console:
jQuery().mapSvg is not a function
It means that there's something wrong with the attachment of MapSVG to jQuery.
Check that you have only 1 jQuery library loaded on your page. WordPress loads jquery.js library by default but some plugins or themes add their own jQuery. If you've found that you have 2 jQuerys - try to find what plugin or theme adds it and contact plugin/theme developers.