The data format has no effect on the strategy. But the asset settings can affect the displayed "Annual Return" percentage, which is is the annual profit divided by the sum of drawdown and margin. Since there is no margin for binary options, the "annual return" is not a very useful parameter for a binary strategy. Useful parameters are the profit factor, sharpe ratio, or CAGR.

You must get no loss and no different results with different training runs, or something is wrong with your data or setup. Check your equity curve - it must look as in the attachment: