Can anyone vouch that this Coinex promo of 1:1 is legit?
What do you mean by legit ?
For me its not worth it because you need to unlock your wings.
Its nice to do if you are not forecasting(but you should

)
This is kinda new exchange for majority of the people so they want to know about the experience of community members. Trading of Wings is live on other exchanges too that is why we can buy for this promo to make deposit there and get rewarded.