You can edit any standard order. You can increase or decrease the order price and limit hashrate. To avoid manipulation, a price decrease is only available within the predefined price steps, can be applied only every 10 minutes, and resets your position to the bottom of the sub-list of same-priced orders. Of course, once you decrease the price, you can always increase it later without any limitation. You cannot decrease the price for 10 minutes to avoid manipulation when increasing the speed limit.
You can also refill your existing orders, which essentially extends the running time of the order. You can refill your orders as many times as you want. The 0.00001 BTC's non-refundable order submission fee is not charged when you refill your order.
If you cancel the order, you'll get unspent Bitcoins back. This lets you quickly switch between algorithms depending on the current profitability without losing funds. However, remember that rigs will be compensated for the loss of earnings due to cancelation. The compensation amount will reflect the number of rigs - the more rigs an order has, the higher the amount.*
The remaining Bitcoins that have not been used yet for paying accepted shares are loaded back into your wallet, and the service fee will be refunded (from the remaining Bitcoins), but the tiny 0.00001 BTC non-refundable order submission is not refunded to prevent order spamming.
Please note that the refunded funds take a few minutes to appear in your NiceHash wallet.
* For buyers: to avoid paying the compensation, orders must either be canceled when no rigs are on the order or halted gradually by taking the following steps: