Add the code snippets below to your theme CSS liquid file, typically that is assets/theme.scss.liquid. Fix font star is overwritten by shop theme (stars become empty square):
For Widget 2.0
.jdgm-star { font-family: 'JudgemeStar' !important; }
For Widget 1.0 (Legacy)
.judgeme-star { font-family: 'JudgemeStar' !important; }
Don't show Judge.me stars at all
.jdgm-star { display: none !important; }
Adjust Judge.me star in review widget and preview badge
.jdgm-star { color: #fbcd0a !important; }