There are no useful accessories for the Philips HD9255/30 and in my opinion it is too small for baking. The Philips Airfryer XXL HD9860/91 makes more sense and there are various accessories available.
Because the function is not available in CH. Galaxus is aware of this issue, but unfortunately they do not highlight it on the product at the time of purchase. If they did, it would be cheaper to buy the version without Wi-Fi (and spend even less).
This is the 5000 Series L.
The product is also available in the same design as the 3000 Series, but without WLAN.
If you log in to the Swiss NutriU app and scan or connect the 5000 Series L offered by Galaxus, the 3000 Series comes up.
The product offered by Galaxus here is not officially sold by Philips in Switzerland.
Solution to the puzzle: do not register NutriU in Switzerland.