@Eric901 This is a forum of hosts and guests, not Airbnb CX, so no one from Airbnb will see your message.
Your requiring a profile photo doesn't mean much to Airbnb, I'm sorry to tell you, which is why things like this happen. You are free to ask your guests to upload their photo, as it's a requirement you have for booking, but Airbnb will never back you up on that in any meaningful way, such as requiring the guest to comply. The best way to know what your guests looks like and to know who exactly is in your house, is to check them in personally, and have them show you their ID.