Neither map shortcode is working.

For some reason over the past two days the [gd_homepage_map] shortcode has stopped working on my site. It was up and working fine and then something has changed and it no longer works and doesn’t even come up with an error message. Literally just nothing. It is inserted into this page underneath the content using do_shortcode()

http://bookwiz.crushtesting.com.au/find-a-bookkeeper/

So far I’ve tried
– using the listings map shortcode – doesn’t work
– adding the map into a sidebar and adding that below – doesn’t work
– adding the [gd_homepage_map] into other pages in the content section – doesn’t work
– deactivating all other plugins – doesn’t work
– tested out other shortcodes – they work

It seems that everything is working correctly except the map shortcodes so I’m wondering if I’ve got something wrong that’s blocking google maps or something to do with that. Any ideas?