guys i already have 1.0 i got Early access and bought Collector editions physical copy in the box i got 2 codes one is (registration code) and the other one is (exclusive SE member code) how do i get the item bonuses without making new account? i want the items to go to my main character in my existing account

also in mogstation they show under my character list only 1 character which is in jp server i deleted 2 days ago

please guys anyone can explain to me step by step so i dont mess my account up?