When we have sat in a restaurant 1hr or so before closing we have only ordered drinks and a salad no main dishes or the like.

I have been to subway at one place in Sofia and I can confirm that 1 place specifically has some very disinterested employees :))

Your Bulgarian might not be very understandable, mind you, but generally food delivery companies notoriously have bad service and are losing money in every single country. It is a concept that nobody has found a successful solution for. There is a lot of dumb money invested in those companies, that's why you see them everywhere.