6 month code didn't work for me registering an Officejet 8710. 2MONTHSDJUK and FREEINK did work.
6 month code doesn't work (skeptical) (skeptical) (skeptical)
Actually I cant enter that code, I'm at the sign up with credit card info page, and I tried the 2 two month free codes you said not to use and they are valid. but 6FREEink is invalid.
I keep getting invalid code when I enter a random 5 letter code, does it need to be QWErt or qwERT where do the 3 uppercase letters need to be? Thanks