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Unfortunately, Cheat happens.
This is something very common with cheats and pcsx2

It hink you'll probably have to play without cheats, or buy an AR dvd and use it on your PS2 to use thise

Have you tried using your original game disc instead of the ISO? Or maybe create a new ISO from your original game disc? I haven't seen any posts that indicated the codes didn't work on normal PS2s so ultimately you may have to play on your PS2 instead of PCSX2.