Hello Anjana,
Thanks for going Pro and welcome to the forums! I’m sorry you are having this issue with google maps. Let me help you figure out where the issue lies.
As a first I would like to ask you to run a test for conflicting plugins and theme. Here is a guide how you can do that:
Testing Conflicts With Themes and Other Plugins
I suggest you start switching your theme to a default one like twentysixteen and check if you are still experiencing the issues there.
Please let me know the results and we’ll take it further from there.
Thanks and cheers,
Andras