Average KO criterion in white?

Cover is generally high OK. You have 2 weeks.
KO Kriterim though, is that when the white version Flash photography is impossible, because the flash on the envelope wrid seemingly broken and the pictures thus only white mist is seen! Thus the shell is when you want to photograph with flash irish unusable.
Closure with magnet is also unfavorable, exactly on the switch ...
I have to buy another ...