[wynnenhanced] Is There Any Way To Use It Outside Of Curse Without The Entire Screen Being Blocked?

If you use the WynnEnhanced mod outside of Curse, the entire screen flashes red and a title blocks your screen telling you to use curse. I use MultiMC (allows you to have multiple instances of MC in one launcher) so I can't really use the modpack without having to go through the hell known as Curse. There is literally no reason for that prompt to exist, the modpack works perfectly fine without Curse. Any fix?

 

The mod is not official, therefore you should post about it on the original modpack thread instead of wynncraft section