Hi, I'm Nathan.Sorry to hear that you're having trouble with this but I'll do my best to help you.
Is this an officejet 4650?
Are you printing from a phone, or computer?
Thanks for confirming.
That is not going to work.
The phone print functionality that this printer supports requires the phone and the printer to be on the same wifi network.
It will work at home, but not when away from home.
There are other ways to do that, but additional software is required. For example you can set up a computer at home that is always on as a server, running google cloud print software and linked to the printer, and then install the google cloud print app on the phone. That will let you print a limited number of things (photos, pdf files, etc). You can get that here: https://www.google.com/cloudprint/learn/
Best regards, ***** ***** for the news,
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