FaceTime not working after IOS 11 update

So I recently updated to the new IOS Now I don’t know if it’s because of the update or a setting. But when I FaceTime someone who hasn’t updated they can’t see me. They can hear me and I can hear and see them clearly but they just can’t see me. I’ve tried FaceTiming the same person using my iPad that hasn’t been updated and it works completely fine. I’ve also tried FaceTiming from my iPhone 6s to the not updated iPad and I don’t seem to have an issue with it. So is there something wrong with my phone or the other persons. This same issue is with others I know who have updated their phones. So???