daily mission

in the daily mission section it has this phrase:

   However, Upon Failing, keeping the reward is only visual. Completing the mission again does not grant bonus experience, therefore it really only restricts the use of another crystal until completion of any shadow mission. 

Can someone clarify/ reword this to make sense. (mostly the last part)

Removed it, the sentence prior to it isn't discussing crystals. You gain bonus experience for completing the mission if you try it again after a fail. No idea what the sentence was conveying.