Theres got to be something built into the software program that won't allow you to refill a cartridge more than once. Then it says incompatable cartridges and you end up replacing them with new ones.
To top that off, HP and costco ganged up and now only sell three color ink cartridges at once and two black. They used to have a combo pack which was reasonable with one color and one black. grrrr
To top that off, HP and costco ganged up and now only sell three color ink cartridges at once and two black. They used to have a combo pack which was reasonable with one color and one black. grrrr