There was one other time where aws, our image service, seemed to have deleted some random images from a user's account and they said they hadn't deleted any image recently. If this was actually the case, it may have happened to you too with your avatar image. You should be able to just upload another image, or the same image if you still have it. If it's not in your library, then it shouldn't be taking up space. I don't think this is a sign of someone gaining access to your, as it would be a really strange thing to do, but just in case you might want to change your password. If you do see any other issues, like someone messing with one of your campaigns, we can always restore the campaign for you. So, just let me know if you see any other issues.