If you used Clearing in 2024, how did you find it?

Two google/youtube name

Really strange, I think when I opened my YouTube channel I called myself name A, later in my email account I used my first name B, but I also changed YouTube name to B, but now,

Whenever I subscribe to a product, it displays my old YouTube name A.

I searched on google people say change contact name, change workplace name I tried all, but none worked (none display name A for me to change)

Can someone please help?