@vanleej2012 I checked your stats to see if I could help. The problem is likely that you bet 1 or 2 euros each time.
When you round each bet to either 1 or 2, the stake calculation and the kelly criterion cannot work at all. You bet the same amount on a bet where we recommend €0.51 as you would a bet where we recommend you bet €1.49.
The recommended minimum bankroll is €500.