As for the glitched up graphics... No idea. Maybe Lunar Magic screwed up some savings or so.
For your second problem, do actually update the graphics displayed by lunar magic, you have to open the super GFX bypass and close it again by hitting ok. Always worked for me.
Maybe though, it really just doesn't work and the reason for that as well as the glitched up graphics is that you accidently reopend the wrong ROM (which is in a different folder and thus can't load the GFX)
Anime statistic on MyAnimeList:
400 animes completed ✓
6000 episodes completed ✓
100 Days completed ✓
... what even am I doing with my life?
For your second problem, do actually update the graphics displayed by lunar magic, you have to open the super GFX bypass and close it again by hitting ok. Always worked for me.
Maybe though, it really just doesn't work and the reason for that as well as the glitched up graphics is that you accidently reopend the wrong ROM (which is in a different folder and thus can't load the GFX)
Anime statistic on MyAnimeList:
400 animes completed ✓
6000 episodes completed ✓
100 Days completed ✓
... what even am I doing with my life?