You can find the right cartridges under this link. https://www.digitec.ch/en/search?q=HP+303

Could you please send me a suitable link?

For the HP Envy Inspire 7220e printer, we recommend using genuine HP ink cartridges, in particular HP 64 ink cartridges (black and three colours). - HP 64 ink cartridges are included in the printer's initial packaging. - HP recommends the use of cartridges with an HP chip or electronic circuit to ensure compatibility and optimum printer performance. It is important to note that the printer is designed to work exclusively with HP cartridges fitted with these chips or electronic circuits, and that it may block cartridges of other types.

According to the manufacturer, the printer https://www.hp.com/ch-de/shop/product.aspx?id=242p6b&opt=629&sel=prn#technical-details only has USB and WLAN. It cannot be connected to a network via a LAN cable.

The problem was solved via HP Support.

Correct, the machine has a flatbed scanner on the top of the machine up to A4 size, but without an automatic document feeder.

I don’t know the exact differences among these models but I can say one that I bought (7220e) is a super one. I can recommend it to anyone.