Put iPad on airplane then turn it back on.
iPad looks for air printer, finds air printer (tells me it's low on ink) , I press print and nothing happens.
An HP printer, have taken off their app as it won't let me print because I've refilled their cartridges.
Any ideas?
Maybe the printer itself is actually blocking you because you have refilled? Are you able to print from other devices?
If you aren't already you should be using InstantInk as it is really quite cheap and makes these headaches go away although I know that isn't a direct answer to your question. For that I would make sure the printer prints from another device first
Printer prints from my android phone and from the Mac.
I thought that you needed an app to print from Android so I'm surprised that that one let's you print but the iPad one doesn't. I've no wisdom I'm afraid, i thought maybe it was s printer issue but if you are printing from the Mac using air print then it should all be good 🙁