this is a fucking joke, and fucking funny shit with the LMGTFY link.. If it cant be explained then the one place I have trusted since i started mining almost 3 years ago has turned to a fucking joke.
It was explained several times and when you ask for an explanation
Someone please explain to me how this works?
It is as simple, as to google for it.
As others have pointed already, your shares for the 21728 round are missing ~20 min and because there is even bigger amount missing (~35min) for the next round it is clear that you had some connection issues for ~50min
Submitting a ticket for cases like this will not help, because it is not a pool problem and similar numbers will have a pool hopper who left the pool and is now cheating to get his lost reward.
I am not saying, that you are a pool hopper or trying to cheat, but there is no way to differentiate the two from the pool's perspective.
Last week in addition to the pool's bad luck i had (just) 5min connection drop, which resulted in 1/3 of the reward for an 11h block, very unpleasant, but not the pool's fault - you either accept, that because of the score system it is possible to have such cases or you choose another pool (especially if you often have connection issues).