I've mined to an external wallet address for about a week early January. Checking up on it now it shows a balance of 0.00000 BTC - even though I know there were ~$40 worth of pending payouts on there.
The balance was above the 0.001 BTC necessary not to be discarded and should qualify for a payout, however the "Payment History" shows no transactions either.
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
Not sure this is the right support channel, but very thankful for any hints of experienced NiceHash users on what might be going on here!