I just got kicked out of my game and when I checked my credit balance, it was negative even though it was at roughly $0.5 or so which would take me around a week or at least a few days to get through. I believe there’s a problem somewhere so I’d appreciate some help… 
I think for your case, it seems CDN and Mudfish is related with your issue.
Sorry for this inconvenience and I’d reset your credits.