The main difference between stop orders and limit orders is that limit orders will be filled at the specified limit price or better, whereas the stop order will be filled at the prevailing market price once it is triggered at the specified price, which means that it could be executed at a different price from the preset stop price.
CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 72.7% of retail investor accounts lose money when trading CFDs with this provider. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.