This is a z-index issue that appears with specific themes. It's an easy fix: 

Navigate to your plugin folder. In the file called 'map.css', which is found in the Templates folder, you'll want to add the following code to line 29: z-index: 999; 

Here is an example of how it will look: 

![image](https://mapifypro.zendesk.com/hc/en-us/article_attachments/200229918/Screen_Shot_2013-11-27_at_10.52.31_AM.png)