Major issues with G3 Male figure in Unreal

Anxious3102

Hi y'all! I am BRAND new to unreal, like still very much learning the basics. I have moved a couple of my g8 male characters over with zero problem at all following the instructions. Everything worked great, they look fine once they're in unreal. But this particular character of mine, a G3 Male based on FWSA Malachi, is deforming BAD every time I've tried. Anybody have an idea of what might be going wrong or a setting I need to change?