Bandai Namco password resets can be completed by going here:
https://www.bandainamcoent.com/account/password/reset 

Additionally, please make sure your password matches the criteria below:

1. Your password must contain at least one letter
2. Your password must contain at least one number
3. Your password must contain one of the following special characters: !@#$%^&*()_+=-`~?
4. Your password must also be between 8 and 16 characters