How do I select a profile photo? I'm only seeing Bitmoji.

Do you only see the "Bitmoji" option when trying to change your profile picture? 

It may be that your default gallery is set to "Bitmoji"

Try resetting your gallery: 

1. Go to device 'Settings'
2. Tap 'Default Applications'
3. Tap 'Set as Default'
4. Tap 'Gallery'
5. Tap 'Clear'

When you return to Marco Polo™ to select your profile picture, you should now see the option to choose a photo from your gallery or to take a photo.