Weekly Challenge Glitch?

I joined a Grifball match earlier and finished off the 200 Multikills for the weekly challenge, but the credits do not seem to have registered on my account. I was around 800,000 out of 1,050,000 and after two games I only at went up to 821,000. I’m still quite a ways off from the 200,000cR daily limit so what the hell is going on?