Sprint / T-Mobile Issues
Knowing from experience and looking at all the other bug reports, I think it's safe to say that one of the major issues right now might not even be Kabam's fault. Sprint and T-Mobile merged recently. I know I still have problems making phone calls using Cellular. The LTE Data connection is just ****. Whatever they did to Merge the towers still isn't working. Now this doesn't affect many other apps that aren't accessing the internet as much (amusingly I can still hotspot with 40mbs), but I'm sure CoC and many other apps play like **** now.
If you are experiencing this issue, I recommend not only letting Kabam know, but also T-Mobile.