Help on cfd orders

Good morning.
I’m doing practice with cfd demo portal and I don’t understand this.
In this cfd order (see the picture) my total investiment is 258,75 euros; if I set a stop loss the amount that I loose should be lower than the amount I invest, correct? Instead here the total capital invested seem 258,75€ and with this setting of the stop loss it seems that my lost would be 790,80€. How can I loose more than I invest?

Yes. €258.75 will be shown as blocked. That amount isn’t available as long as position is open. When you close the position it will become available again plus or minus profit/loss. You can’t loose anymore than that amount.