On June 11, 2018 Google changes its policy regarding google maps usage as it demands even on free accounts to provide billing information. Those using google maps on any Elxis extension must provide billing information to google, else the maps will stop working. Google credits you with 200$ per month, so most probably maps will continue to be free for you but the trick is to get your credit card details in order to make you a future customer. Also there is no guarantee that it wont change this 200$ limit in the future.

So you have to decide between these 2:
1. Provide google your credit card data and continue using google maps
2. Stop using google maps.

What about openstreetmaps ? Is there a way to add them to elxis ? Someone must make a module i quess...