Question about Canon Selphy CP1500

Hello! I bought this Canon Selphy CP1500 on 31/07/2024 and I have two years warranty. I used this machine only one time and whenever I want to use it to print photos it shows a message in yellow badge “Paper and ink cassette sizes are incorrect” and this another message “change both paper and ink cassettes”. So please if anyone can help me out with this issue I would appreciate it. I changed the ink cartridge and reset the printer but still have the same problem. What should I do? Thanks in advance