We are using this plugin on a site and it worked fine for several weeks. It is now showing up blank. I have tried deactivating and reactivating, reassigning maps, and upgrading to the latest version. No luck. Map should be seen on this page http://epics.staging.wpengine.com/
Meanwhile mail me wp login to email@example.com so i can find it at your end.
We have resolved this issue via email support. Please contact us any time if you have any question or issue with the product.