How to change profile photo in BFF app?

here is app called BFF find my friends and phone it's one of those social map apps one of alternative for zenly very popular app which has been removed from App Store so here if you go to your profile you can just tap on your profile photo and that's how you can just change your profile photo so you can just do a camera or give your photos and then if it will automatically use like your um selfies for example and then you can see that yeah your profile photo has been updated so yeah there you have it and that's the idea and how this app works foreign also if you want to change your username it's also possible to do that you need to go to settings and then there is account and then BFF ID tap on pencil in the top left and then you can also change your username