There must be a reason why Cryptopia has not opened for trade of Helium, right? Why would they not if everything is ok, they loose money. The dev team might not be honest here and share the real reason why Cryptopia has not opened for trade / withdrawals.
I have a simple question for the dev team that doesn't appear to have been answered.
(1) How many coins are "stuck" at Cryptopia?
(2) Provide a transaction ID for the transfer of coins to Cryptopia for this amount of coins. You should be able to as the that txn must have been done if they are to open for withdrawals and trade. Did you transfer coins to Cryptopia?