If you would like your account to always mine the most profitable coin/chain we have a feature available called Auto-Profit Switch.
To activate the auto-profit feature just click on "Purchased Contracts" from your account dashboard. Then select the contract(s) you want for auto profit switch and turn on the feature (you will see it below the purchased contracts marked Automatically switch to most profitable coin).
The system checks the most profitable coin to mine every hour and will automatically switch your hashrate over when required.
Attention cloud miners:
When mining auto-profit the Daily Fee (not applicable to free hosting) is divided up between time spent on each chain. Chain switch can occur once every hour so the fee could be divided into 24 hours.
Example (1 TH/s)($0.14 USD fee), 12 hours mining BTC and 12 hours mining BCH would mean the miner would need to earn at least $0.07 USD fee in BTC itself and at least $0.07 USD fee in BCH itself. Another example, 1 hour mining BTC and 23 hours mining BCH would mean the miner would need to earn at least $0.00583333 USD fee in BTC and at least $0.13416659 USD fee in BCH.
Moreover, the following is an example of a profit earned on one chain but the day itself not being profitable while auto-profit mining: Miner spends 23 hours on the BTC chain and earns $0.10 USD in BTC and spends 1 hour on BCH chain and earns $0.02 USD in BCH. In this scenario the miner makes a profit of less than $0.01 USD in BCH and has only paid approximately $0.11 USD for the daily fee ($0.14 USD). A profit in BCH was made but the day itself was NOT considered to be profitable.