Hello,
Sorry for the delay in answering.
1) What version of Redux Framework do you use? Try to clean browser cache and let me know if you still have this issue. Provide admin panel access then.
2) http://prntscr.com/g1quy8 I don’t see any weird characters. Have you sorted out?
3) Cart bg you can disable in Theme Options > Header settings. At the same place, you can choose wishlist icon position.
Regards