Be 1 of the 2

We want you to solve this code:
                                                                 with this decoder

Contestants who enter the contest and solve this code with be given the chance to win a prize. Winners who figure out this code are needed to send in their address in order to receive prize, otherwise it goes to the next winner. Do you think you can do it? I must worn you some of the letters aren't in the decoder, but trust me it's simple. So are you ready now? We only have prizes for three winners, so don't hesitate.

I must also say do NOT send in the answer to the code by comment, we don't need any cheaters! Email will do perfectly fine. If you're not sure how to contact us go to our website asia17hardwin.wix.com/shiverandfears  and click "chat with the author" Good luck, and Scary Creepsmas to all!