@Fidel15 Unfortunately, there are often Airbnb support staff who don't really know what they're talking about.
"Provided" on the Airbnb platform means that it is included in the price, unless they have a distinction for you to choose, like the Free vs. Paid Parking - what you are offering is "Breakfast available for an additional fee". But since there's no check box for that, it has to be noted elsewhere.
I have the same problem with "Wifi" which only lists "continuous", Ethernet, or Pocket Wifi. None of those is an accurate description of my Wifi connection which is a cell data connection. It's metered and expensive, so it gets turned on when I or a guest need to use it.