I have some problems with the miningpool.co:
1) balance is not updated (I received two transactions and then balance is frozen);
2) incorrect Total Earnings (was decreased from 8 to 6).
Please contact
miningpool.co support for this. Perhaps there was an orphan block?
Remember that Bitmark takes 721 confirmations to mature, which is normally 1 full day.
The rationale for this decision can be found on the wiki.