Winter White Hamster’s Ear bitten off as baby? Excessive Scratching, messed up ear ):

[Jellyfsh]

Hi! I just got my first hamster ever two days ago! But... my mom went to purchase it without me. I noticed that its right ear was messed up, and I really can’t tell what’s going on with it. I’m extremely concerned and I’m not sure what it is. I want to know if anyone might know what the problem is. He doesn’t seem to have ear mites or regular mites. He only really scratched his little messed up ear once and a while but when he does, it’s like intense and I don’t want him to hurt himself. Here are some pictures. I hope someone can help me, what should I try?