We did not use the jb map module in Bobby theme, we have used Google map Page builder addon only. the reason why you get the developer purpose only text over the map is this is due to google API you need to add your own API key to remove this text. kindly follow the instruction given in the video below
First of all, this is not an Error. If the Developer purpose only text shows after added the Right API means you did mistake in configuring your Google map API. kindly recheck your Google API settings.
Please do take some time to read through some of these links: