I purchased an Envy Pro 6400 series last September and enrolled in the Instant Ink programme. All went well until I got a paper jam. It then started printing cutting through the top line of type. Switched off and disconnected then re-connected after 5 minutes which seemed to resolve the problem until I got another paper jam. Same issue but this time the disconnecting method did not work. After a 2 hour phone call and remote assistance I was sent a replacement as my printer was still in warranty, and told to keep instructions, cables, inks, etc. The new printer came - without ink - but the old cartridges were not compatible because I was enrolled in the Instant Ink programme. A return label for my old printer was also not included. Further communication with HP resulted in new inks being sent and being told that 'there must be an address somewhere where you can send the old printer'. In the meantime an email from UPS indicated that a return label was on its way. I put the new ink cartridges in the replacement printer and a printer information page printed - cutting through the top line of type - see photo below. I tried to connect it to the Instant Ink programme but it needed a code - which it didn't give on the configuration page. I therefore could not connect my laptop to the printer. It seems as though one department does not communicate with another - especially with regards to the Instant Ink and the efficiency of the printer is in serious doubt once you get a paper jam. I have now decided to cut my losses and buy another printer and it will definitely NOT be HP.