SilverCrest Airfryer- Absolutely pathetic design

Bought a SilverCrest airfryer. What a useless product and an absolute waste of money. Difficult to open door(u are sure to hurt your fingers). Issues with touch screen, does work properly. Someone shud teach Silvercrest about user interface. Can go ip and down with timer or temperature, have to go all the way round if u go past what u want to set at.