TikTok knows my deadname

I don’t use my deadname, haven’t in years, legally my name isn’t even this anymore. No emails, nothing connects to it. I’ve never even bought anything from TikTok shop so it’s not like they used a name from a card or anything. But TikTok just gave me a notification for the shop, and included my deadname in it. Idk what privacy settings are being violated or what to change, but just so everyone is aware, for their own privacy’s sake, tiktok is overstepping to a crazy degree.