Hi, I'm Sudipto. Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply ASAP
Do you use Windows or Mac ?
You have two questions and the best way to get the answer is from a manual, you can download it from the link below then, follow the steps from page 19 for the paper settings and from page 40 for the cartridges replacing instructions, but if you have followed the same steps as on the manual, to replace the cartridges then, the new cartridge can be defective and you have to replace it to solve the problem with the cartridge. Let me know, if you need any further assistance.