Just recently picked up EZ Flash Omega!

I am using this on my original model Nintendo DS. When I originally loaded all the software on to it, I ran Sonic Advance 2, but there were only two cheats for it. One of them did in fact work. After which, I decided to try to add some more cheats to the file or add another file (an alternate cheat code file, which didn't show up). Then it got to the point where the option to enable cheats stopped showing up. I formatted the SD card I was using, then started from scratch. The option to enable cheats is still not showing up, despite the option being selected in the options menu (under the controller icon). I've tried the other games I have. NONE of them are displaying the option to enable cheats.

What is it that I am doing wrong? Or does the lack of the enable cheats menu have to do with me attempting to modify the cheat codes for one of the games. If that is the case, would I need to start from scratch?

 

I'm trying to add codes for Sonic Advance 2 (U) and Sonic Advance 3 (Europe), but they don't work; I grabbed some AR codes and tried to convert them to a format compatible with EZCheat.

The codes I am trying to add are All SP Rings and Ring Combo X9 (Sonic Advance 2-U), as well as All Lost Chao Found (Sonic Advance 3-Europe).

EDIT: I swapped out the European SA3 for the US version, and I used a cheat list I downloaded from another site, and the cheat still isn't working.