You don't need to utilize the instank ink function/app, you could visit Tesco and buy your printer ink from there. Of course It's going to be dearer however , you don't need to give Tesco your phone number (Unless of course naturally you happen to be during the ClubCard plan, https://hpprinterwindows1059247.tinyblogging.com/hp-printer-pilote-for-dummies-81667812