KJW GLOCK 23 new and need help gas problem

[Henry5k]

Ok guys first post and i need some help very very quickly
my gas gun that i bought of the zeroone website a few days ago has sterted going wierd. when i shot it yesterday the firsts hot was fine then the second...fine then they shots got weeker and weeker and the blow back weeker and weeker until the gas sudenly burst out the mag and througha ny hole it could out the gun. Then today i tried again and it did the same thing but without the gush of gas and when i tried to fill it up with gas the gas didnt go into the clip but all up my hand and around the mag. the nozzle and pin on the gas can are slightly bent now. What shall i do and what is wrong!!!? Please any help would be greatly thankfull