They promise a highest cashback than they really give + they take ages to validate a sale. Worst is if you want to do a cashback claim, you can wait for a looooong time until you find out it has been closed without notice. Additionnal time for withdraw the money into your account. We're in 2019 but still taking more than a week to confirm account information and another week to transfer money.... come on !!
Don't waste your time on this, more efficient to find a good deal on what you want to buy than use this website.