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The transaction history has disappeared, but the last I saw, I had about 0.4 Ethereum and about 0.06+ ZEC; their minimums FYI (as they notified me in an earlier email) are as follows:

BTC minimum payout amount is 0.0015 (150 000 satoshi).
ETH minimum payout amount is 0.05.
DOGE minimum payout amount is 50.
LTC minimum payout amount is 0.001.
NMC minimum payout amount is 1.
DRK DASH minimum payout amount is 0.001.
XMR minimum payout amount is 0.4
PPC minimum payout amount is 0.01
CURE minimum payout amount is 0.2
BTCD minimum payout amount is 0.001
UNO minimum payout amount is 0.001
ZET minimum payout amount is 1
START minimum payout amount is 0.1
ZEC minimum payout amount is 0.00005
REP minimum payout amount is 0.1
ETC minimum payout amount is 0.15
STEEM minimum payout is 1

I just saw a message on the dashboard appear now, saying "Please be patient for your payout since they are only done once a day. Because you started in the middle of our 24-hour payout period your first payout is expected to be less than the following.
You can view your balanced coins here" > however, when I click on the link to view my balanced coin, it shows nothing. Also, if minimum coins were the issue, it shows up in "Payout" section.

Alright so seems you are under the minimum payout for ETH. Also if you are currently not assigning at least 5% of your hashpower to ZEC, that will not be paid out either. until you do. I just experienced that this week too. Also i have had some situations where i didn't see the balance of .04 ETH anywhere though i was sure it should have been generated. Next day it was just added to the current day mining rewards. Obviously dont take my word for it and wait for the helpdesk to come back to you, but dont think there is anything to worry about, Good luck with the mining!

I'm not under the minimum payout, the minimum payout for ether is 0.05, and I had more than 0.4 .. minimum payout for zcash is 0.00005 and I had 0.06+ .. also, i have 7% of my hashing power allocated to zcash.