Settings

Open Settings from the sidebar.

Profile

Your name, email and profile picture.

Password

Change your password here. If you signed up with Google you don't have one and don't need one — keep using the Google button.

Preferences

Theme — Light, Dark or System. System follows whatever your phone or computer is set to, which is what most people want: light during the day, dark at night, without touching anything.

Security

Your recent account activity and the devices currently signed in. Worth a look if you ever suspect someone else has your password — and a reason to change it from the section above if something looks unfamiliar.

Danger Zone

At the bottom, for clearing your own data. See Resetting your progress before you touch it.