To change your avatar photo or background image:
Go to Profile: For APP, tap on the avatar (located at the upper-left corner) - Profile.
Tap or click Edit Profile.
Tap or click the avatar/background and select the photo you like.
Save your changes.
Photos size and file type:
Profile photo: must be at least 20x20 pixels to upload (recommended size is 400x400 pixels).
Background image: The recommended size is 1500x500 pixels.
File type: PNG, GIF, or JPEG is recommended.
NOTE: On APP, it is necessary to grant GETTR access to your Photos beforehand.