Have you filled out yobit's addcoin page and paid the fee?
https://yobit.net/en/addcoin/Bear in mind if yobit adds your coin and you want maintenance updates you will have to pay the fees shown on this page.
https://yobit.net/en/maintenance_request/Robelneo explains how their addcoin process works in this post.
I have send 0.1 BTC to yobit for zcashshare list yobit long ago.Ihave try to contract ,but no message replay this .why?
You can only use yobicodes if you want to list a coin and if they accept your coin,then they will activated it,but if they did not accept your coin,then you can activate your yobicodes yourself to recover the submission fee..
This is how it works and I think they have not yet change it..