Connect to your Atlas Cluster

how to terminate my current cluster?

Login to yoour Atlas account
On clusters page adjacent to collections tab you will see a tab with 3 dots
Right click on it and choose terminate
Alternately you can create another project and create a new Sandbox

Thank you. I have created another Atlas Account

Thanks @steevej-1495.

Able to connect now, There was an typo in DB password.

Closing this thread as all the issues has been resolved.