Basically it's just a sign from the dev to annoy you because you're using modded games. So at 3rd or 5th battle attempts consecutively you'll get a notice that'll say "abnormal battle" if your mod is on. Just tap okay it'll restart the game normally and you have to battle the monster again. But if you don't want to do that after 2nd battle attempts turn off your mod to battle normally and it'll reset the battle mechanic so you'll not get the notice. And then you can repeat that.@Fruytzy How does that work? Can you explain it please?