Thank you realnez. Yes, I too have tried all the steps for the past 3 days. The biggest problem is there is no way to even determine what the actual problem is. The 406 Error does not throw much light. It seems different people have different errors and some are being able to get through with the payment/icloud configuration updates. The support response is pathetic: "For one or more reasons, your enrollment in the Apple Developer Program could not be completed. We are unable to continue with your enrollment at this time." I am guessing they have certain parameters which either they have hidden intentionally or just are too lazy to look into and inform people. This is really getting frustrating and I am not being able to push my app to the store. I am sure there are many others who are facing the same problem. If anyone has any suggestion on how we can all work together bring it to their attention then there might be some chance.

Same problem. It's really sad to see that apple has not resolved the problem for so long for so many people. Anyone here who could get it solved?