Why I cannot buy 100 & 300 points after event over ?? Is it due to bug or some rules ?

Magnum is played by more and more players,but magnum players are playing worse.The changement makes a lot of players think magnum is easy to play The magnum in old version is good enough,right? As a magnum player,I hope....

The users who have a reinforced gun carriage think they should be compensated...... The reinforced gun carriage has become the original version of magnum... so the new augment will cost me twice?so the crystals i spent on the reinforced gun carriage make no sense?