On The Web:

To add a profile picture to your account, click your initials in the bottom left corner and select Settings.

Select My Profile then find in the middle of the page photo and select change.

Hit Save Information at the bottom of the page to save your selection.

On The App:

Click the profile in the top right corner of your app. You can click on the camera and then choose from the gallery or take from the camera.

Click Confirm, once you have the correct photo selected and you're good to go!