About 2-3 years ago I bought an HP printer/scanner, and was suckered in to the Instant Ink system. The machine was the most awful digital purchase I have ever made. The wifi connection was hopeless, usually unable to connect with a BT hub about 2 metres away. There were also lots of issues with opaque user procedures, a help system that did anything but help, and so on.
The thing was so bad that, within its warranty period, I took it to our local recycling depot. The best day I ever had with it, my best hard throw into the skip.
The same day, I cancelled the Instant Ink account without difficulty.
Like TowerDog, I will never again buy an HP digital product.
Good luck - you will need it.