Exchanges commission and why just opened trade is displayed as unprofitable?

Exchanges charge a commission for each transaction.

Binance 0.1% (25% discount if BNB is available and bigger discounts if your trading volume > 100 BTC per month)
Bittrex 0.25%
Yobit 0.2%

So, if you bought 1 LTC for $100 and sold also for $100 on Bittrex, then you lost $0.5 or half a percent.

When you open a trade, a loss is immediately displayed for this trade in the tab "My tasks".

When you open a trade, the service takes into account the exchange commission for the purchase of the coin, as well as the commission for its subsequent sale. Also, the service takes into account the current spread (the difference between demand and supply).

Example:

You bought 1 LTC for $100. You don't have BNB on your account.
BID = $99, ASK = $100.

Thus, at the opening of the trade, your profit on it will be: -((100-99) / 100 * 100 + 2 * 0.1) = -1.2%.
Simplified Formula: -((ASK-BID)/ASK * 100 + 2 * FEE)
Original Formula: (($sold_amount * $ sell_price + ($bought_amount - $sold_amount) * $bid_price * (100 - $fee_percent) / 100 - $bought_amount * $buy_price - $fee) / ($bought_amount * $buy_price + $fee)) * 100

Binance commission. Use of BNB.

STEROID automatically uses BNB on your balance to receive a discount, if you enable in your Binance account that you want to use them for this purpose. Thus, you need to monitor the BNB balance and manually purchase the coin to increase your profitability.

The service takes into account the exchange commission, when you set the parameters in the tab "New task".

Let's look at the example:

You want to buy LTC for $100 on Binance. You don't have BNB on your account.

You set the take profit at 5%. LTC will not be sold for $105, but will be sold for $105.2. So that your profit will be exactly 5%.