Changing your Splinterlands account password is simple; please follow these steps:
1. Log out of your account and clear your cache on your computer or phone.
2. Go to a computer, log in to https://splinterlands.com/, and click the Forgot Password icon.
3: You will enter the email address associated with your account and click the Recover Password button.
4: Go to your email and check for a lost password email from Splinterlands and complete the Password change
If you want to recover your Hive Private Keys now, please follow this article 5 Steps to Retrieving your Hive Private Keys and use this one to change your Hive Keys if needed: How to change your keys.