SellerHint for Mac
Reset account access
Recover access to the Apple Account used for cloud sign-in.
Mac cloud accounts use Sign in with Apple, so there is no separate SellerHint password to reset. Try signing in again with the original Apple Account.
If you cannot access that Apple Account, use Apple’s account recovery process. If Apple sign-in succeeds but your library is missing, contact SellerHint support before linking a different library.