The mod features is still working, the problem is the game server is now checking your battle result. Why the developers added this check? Because of smartass and Solo Leveling wannabe users. If you are doing a miracle like superman by winning something you can definitely not win / unrealistic, then battle result will be voided.
Tldr(for those with bad comprehension)
Mod works? Yes, but limited.
Can it be "fixed" so I can abuse? No, I have no access to their game servers to disable the battle result validation.