curseforge broke epicfight on their app, for a while it just straight up vanished, for a few hours it was back but only on a version from half a year ago, now it's gone again. they can't fix it right now seemingly because their servers are dying and / or they're getting ddosed. if you're only playing singleplayer you can download the latest alpha version from curseforge but their webstie seems to be down so that might not be possible.