Robert1893: that it's not affecting everyone.
All I know is that I picked up several hundred credits yesterday on my iPad and iPhone 5s. I have more trouble with the phone hanging up sometimes (pun intended!), but usually restarting the app clears it up.
Based on the mixed results we are seeing, it must be some combination of iOS versions, installed apps, and possibly something related to adblockers (BTW I am pretty sure Apple never installed any ad blockers!).
I am not sure it is possible to need an update to the WGT app, because I have to install the updated mobile version every time they change it. Of course, if you had some block on automatic updates for the WGT app, that might be a problem worth checking.