The cheats are all in either Chinese or broken English. DeadSkullzJr is attempting a rework/new database of cheats for the Omega because the current list is absolutely atrocious.
He's slowly making headway but it is taking quite a bit of time simply because there are so many games and so many cheats. He's essentially creating new/verifying current/translating current/fixing broken and testing all cheats for every game so it is taking him quite a bit of time to do. He has recently stated he is halfway done and is working on games starting with the letter J now but has also been working on this since about the end of 2019/beginning of 2020 so it will still take more time to complete the new database. He's also working on other NDS projects as well, so it will take more time due to that.
There's not really a fix because the current "English" database provided by EZ-Flash is terrible and in order to fix it, it basically requires someone to completely rebuild the list from the ground up like DeadSkullzJr is doing.