Gee your having some luck lately, shame it's all bad!!
Inkjet printers certainly don't like sitting without use for long periods or the ink dries out and clogs, probably what has happened, I'm not familiar with your model but what I have done & worked on some is to use an
electrical contact cleaner (pressure pack) and using the nozzel firmly pushed against the jets, and spray, be aware that this is a last resort, I don't want to give you a bum steer that may result in turning your printer into a boat anchor!!
Saying this your model might have the jets built into the ink cartridge throwing this theory out the door since it's new, you may notice on the cartridge a small contact circuit, you could give the
contacts on the printer a clean with the spray, been awhile since I've worked on any.
Hope this helps.