Craptopia how can you justify that all Qt based wallets are created from the same base code and SIGT wallet is working fine on YObit with 300% more volume then you ever handled. It's look like you try to blackmail Dev. and essentially try to blackmail your customers to sell them and exchange their Holdings to other Coins.
Or better case is that you are Plainly lazy or out of resources to handle you exchange period.
While i'm not going to say one way or the other, I would point out that there are a few differences here.
1) Cryptopia's wallets have millions of transactions in SIGT in its history. That could be a contributing factor (in fact, they mentioned that in their post).
2) Cryptopia probably has significantly more wallet addresses than YoBit, despite them having more volume RIGHT NOW.
3) More volume does not mean more transactions. They could just be more value per transaction.
As such, I don't think you can compare an exchange that has only been trading in the coin for a short time, with one that's been doing so since the beginning. Even if said new exchange does more volume. It's an irrational argument.
Regardless, maybe the problem is with Cryptopia.. I just don't think it's useful to do such an unbalanced comparison.