One day, you see google map is not displayed, you can not enter the address in the search bar. Do not worry! Please check the issues below.
The reasons google map does not work:
1. You install some plugins that are not compatible with the theme. You need to check and uninstall it. Then, try again.
2. You do not have a google api key. From June 2018, you need to create an api key for your website. See this video: https://www.youtube.com/watch?v=_huN7tSM4SU
In some cases, you need to create a billing account before you can generate the key. See more: https://cloud.google.com/maps-platform/pricing/