How to get $100 coupon for switching from 8k to 5k+

I got my headset today, it seems they sent me 5k+ while I choose 8k when I backed them on kickstarted, I do remember getting some survey forum but as far as I remember I choose 8k, apparently either I did something wrong while choosing the options or they screwed it up by sending me 5k+, anyways as per their survey email it says you should get $100 coupon if you switch, so technically I should get $100 coupon but I don’t see it anywhere. Can someone help and let me know how can I find that $100 coupon?

@anon74848233 @Matthew.Xu @PimaxUSA (add to earlybackers)


tahnks for so much answers