Gladietor Arena Bug

Well this is so hard to get AP bosses In arcane legends gladietor arena.. Moreover they are bugged :( i think sts shd do something on this..

I am tring arena from many days.. i have 4 AP from arena Missing spider, childs play, bloodhammer and final one but i clearly remember i killed rutger with spider and sthl with spider still when i killed glob with spider but no ap i have got !! one of my friend was with me he got the same bug !! he killed rutger and sathl with spider but after killing glob with spider it dint gave us ap.. same type of bug happened before too.. i was trying rutger with pumpkin ap with two of my friends.. one had the ap but after killing rutger without hitting pumpkin i got the ap but my friend [who dint had ap] didnt .. Getting sick of this arena bug issue.. searched a lot for challenger nothing come as output.. its really really annoying for ap hunters.. :\
I hope Moderator will see this post and reply me help on this issue

Thank you,