Weekly challenges not working

[Destructoidmax]

Is anyone else having trouble with the week 5 challenge? One of the is "get 250 1 shot 1 kills with a pack-a-punch recommended shotgun", I've probably killed over 800 zombies with one shot kills and a pack-a-punched shotgun but it shows that I have zero kills. The other is "get 75 kills with the gun-butt of a recommended weapon", I probably have at least 30 kills this way yet it still shows zero.. I have been able to pass 3 other week 5 challenges but that's it. Any help would be appreciated.

 

[Archangel72]

WHAT shot gun are you using?

 

[Destructoidmax]

So far I've used the lockwood 680 and expedite 12.

 

[Archangel72]

you need to use a recommended shotgun I do not think either of those are

 

[Destructoidmax]

Ok thanks, I'll try that.