Look, Kongregate is lagging at the moment, maybe they're getting a lot of traffic, I don't know. If you don't see the green dot (which means it is red) at the top of the kongregate chat, you're not sending in scores. If you play and meet the conditions, but that dot is still red, it means the chat couldn't connect, and your card won't be registered. I recommend coming back when Kong is running at a better speed.
The sniper gun has 2 advantages:
1) It does damage regardless of armor. Meaning, shields do nothing to it. Those big shield ships... sniper can 1 shot them.
2) It fires instantly, making it much more accurate.
Just a heads up, I'm currently working on a big update to address the restart campaign issue, make some of the early campaigns easier, and to add a special kongregate challenge mission!
 "Bubble Tanks"){kind=icon}
 "Sonar")
 "Doeo")
 "Kinetikz")
 "Duels Defense")
 "R.O.B.O.T. Relatively Obedient Being of Thought")
 "Drakojan Skies Acolytes")
 "Meteorite")
 "Bluep")
 "StormWinds 1.5")
 "Sola Rola - The Gravity Maze")