Did you adjust the hop up at all before firing those shots? If not, do so. The AAP needs a touch of hop to do anything, as when it's off, it's very much off. It's either that or the arm has come loose during shipping, of which I've heard of a few instances happening.
Mag doing leaky things is just the joys of warehouses and airsoft QC I guess. I'd be the type to sort it myself (bit of silicone oil in the fill valve and a bit of pressure overnight and a lube of the bolt to help it out), but best to excercise the right to a return/replacement/refund whilst we've still got some consumer protection cutting about ?