I just got this reply from YOBIT, regarding B3Coin UPDATE:
2016-12-26 19:34:02 BlackSmith
Updated/resynced
2016-12-26 19:36:29 dominikherzog
admin answer:b3 updated/resynced
Hey Greedy,
but actually its not possible to move coins from yobit. Its still in cold storage.
Greetz
Steve
Yes I understand. My coins are also stuck in cold storage. I have already contacted YOBIT concerning this issue. I hope that they work something out soon.