How to edit/update your personal profile and account details
You can open your profile modal in two ways:
Clicking on your profile image in the top right corner to open your notifications, and from here you can click "Profile" at the bottom.
Go to Settings > Account & Branding > Users > Your Named Profile and click the "Edit" button to open your current profile.
From here, you can edit your username, your password, and any preferences that pertain to your account directly