Dear วสันต์ ปึงวัชรสมิทธิ์, We regret that you couldn't enjoy the game. For App registration you can use code "Tracer" or just skip the referral part. We hope that you will register successfully, start playing and share with us more feedback being able to see the game from the user's side. Thank you.
With respect,Anastasia,MetaTrace Support Manager