Epson 9800 won't read new cartridges and it says "no ink"

hello,
i unclogged my epson 9800 printer at the beginning of last year
now because of covid i have not use my printer until now so its clogged again
i purchased piezo solution and a new cyan chip to clean the printer again and to correct the cartridge error “cyan”.
I did everything step by step and nothing works, i can get to start to initialize the cleaning cycle
the printer gives me a message saying out of ink and i have just put more piezo solution
please help! Let me know what else to try

thx, Ursula