To change your password on Metafy, adjust your Security Settings.
Click on your Profile Picture in the upper right.
Scroll down and click the gear icon to launch Account Settings
Select Security.
The direct link is https://metafy.gg/account/settings/security.

You’ll need to enter your current password, then enter your new one twice. There is a minimum of six characters for a password.
Click Change Password, and you’re there.