Hi Sandy,
Thanks for your response. I did everything you said. There were no firmware updates when I followed the link you gave and directions, but I did install the newest printer driver. It's still not working, however; the computer sends the signal to the printer, and the printer says "printing" (with the dots), and the power button keeps blinking, but nothing prints.
To answer your questions, I am on MAC OS High Sierra version 10.13.4, and the printer is connected via wireless.
Thanks in advance for your further assistance,
Nikhil