I posted to the public gallery 2 anime-style images using this prompt: Hana Uzaki is a very short 19yo woman with very short silver hair, big blue eyes, wearing a form-fitting raglan shirt (white with blue sleeves) that says "SUGOI DEKAI" in white inside a solid red box, large chest, skin fang, energetic personality, waving hello. Then I posted an oil painting - realism version. I upvoted the anime versions (as one does) and after an hour or so they disappeared from the galleries (G, PG-13, None). I haven't upvoted the painted version and it's still visible. Then I posted a third anime version as a test, did not upvote it, but it disappeared too. What is happening?