Can हर दिन follow सलाद or does it have to come before?
Hindi has a rather free word order, so, yes, having सलाद before हर दिन won't make the sentence grammatically incorrect. Having said that, the order in the suggested answer sounds way more natural.
रोज़ and हर दिन are same thing. They can be used in place of each other
Petter khana khata hai har din is correct. -i am damn sure... R&D deptt plz improvise this app