"A problem has occurred and you will be unable to print"

[fjdk_a0]

Out of nowhere, my M209dw LaserJet printer has started flashing an amber light. When I log into the SmartApp, I see an error message saying "Printer Cannot Print" with no other information. However, the diagnostic tool in SmartApp does not find any problems. Similarly, when I print the information page, all it says is: "A problem has occurred and you will be unable to print, except for printer reports, until the issue is resolved." 

I am using a Mac. The printer is connected to wifi (in fact, the printed information page confirms this). 

Only other potential clue is that when I log into HPSmart in the browser, it indicates that my printer has not synced with my account since late December; and when I try to sync by clicking the "reset" button, it says my printer is not connected (even though it is).

Has anyone been able to find a solution to this type of issue? I am going on hour 4 of trying to print a single page and have been unable to find anything that tells me what is actually wrong. I am this close to chucking my printer in the trash and never buying another HP product.

[Repairatrooper]

If you are subscribed to  instant ink you need to resolve the communication issue, that is your problem. Without communication you are able to print a few pages nut then the printer will stop until it is able to connect. 

[fjdk_a0]

OK. Any ideas on how to fix the communication problem when every diagnostic I can find indicates that my printer is connected?