that is unfortunately 2 of the biggest issues with Yobit.
first they don't have any funds of nearly 80% of the altcoins that are listed on their exchange. UCASH must be one of these coins they do not have. that is why you see the processing thing there and it will remain like that for over a week.
even deposits of most altcoins encounters a lot of problems because they don't run proper nodes of these coins.
second is their bad support staff which doesn't answer questions like this. there are moderators who don't know much and only answer common questions like "when is the .... fork coin happening",... but they either ignore or forward to someone above who ignores the rest.