Problem with Google Map API?

[el-saadi]

Hello, the google map has worked for our site quite well these past days. But for some reason it doesn't work anymore.
We haven't changed anything in the settings. The API & Server Key is still the same, and we use the same domain. In this case what could be the problem. Our site is called Zwayt.de. Here is a link to our
global map

Would be kind if you had an idea, how to solve this issue.

Appreciate your support