Yeah, I had to debug this with my MIL over the phone. Her card had expired and she ignored the many many many emails, and the printer had a light blinking, but it wasn't listed in the manual, and I don't use the service, so...
Once I figured out what the problem was, she was able to get the printer re-enrolled, but then it took a while for the printer to realize. And then, the ink was apparently dried up, because it didn't want to actually print. I don't have a problem with the HP printing plan, but clear messaging on the printer would help, and inkjets not being terrible would also help. (Also, it would help if my MIL wouldn't leave problems unsolved ... 'Ohh, it stopped working a few months ago', but that's a different issue)
Once I figured out what the problem was, she was able to get the printer re-enrolled, but then it took a while for the printer to realize. And then, the ink was apparently dried up, because it didn't want to actually print. I don't have a problem with the HP printing plan, but clear messaging on the printer would help, and inkjets not being terrible would also help. (Also, it would help if my MIL wouldn't leave problems unsolved ... 'Ohh, it stopped working a few months ago', but that's a different issue)