Using mobile printing, HP Smart app and macOS, the printer prints properly. However, about 1 inch on the bottom part of the paper cannot be printed on, and after printing, the printer does not fully eject the paper. The paper is still stuck, and I need to manually pull the paper before it begins to feed and print another page. So when I don't pull the paper manually, when it gets the next paper to print on, the first page is still the one that gets printed at.
The unit was already sent to the service center for this problem; however, when it was delivered back to me, I wasn't able to check immediately, and it took me more than a month before I tested and found the problem still exists.