This article covers:
I forgot my Chargebee account password. How can I set up a new one?
You can change your Chargebee password by navigating to your Manage Accounts page by clicking on your account name on the menu’s bottom left corner and click on Edit Profile. Open the Change Password link, enter the old & new passwords and save the changes.
Here's a video for your reference.
If you've forgotten your password, use the Forgot Password Option on Chargebee's Sign In Page. You will receive an email to reset your password. Screenshot below:
Related articles and documentation:
How can I change the email with which I login?
Chargebee Signup, Email Verification & Account Claim Process