The best way to do that sort of thing is to use a printer that has an email address assigned to it. Most HP printers have this "ePrint" capability. Then any emails sent to that specific address get printed, or if they have attachments then the attachments are printed instead.
I suspect that whatever feature "suddenly stopped" working is a result of someone replacing routers, reconfiguring something on the printer, or playing with new toys they got over Christmas. It's probably worth talking to whoever looks after computer/internet/router stuff at the remote location and let them explain everything that's changed since it was last working properly. Should be some clues there if they tell you the full story.
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