Die besten Restaurants mit Sandwichladen Essen in Frankenthal (Pfalz)

I don't understand that I was previously able to combine and redeem the coupons (50% off a Footlong + half a sub when you buy a Footlong) in the app and now people are standing in the way and claiming that this doesn't work? First refuse the vouchers if you haven't printed them out and now something like that?! There's always something. Oh and one cookie tasted like pure chlorine. Are the sheets not cleaned thoroughly or why does this happen?