I've seen a lot of these posts online without a resolution so I'll try to post updates here and hopefully others will find it helpful. Most recent update: I've been able to successfully complete my application and I was able to pay the subscription fee. Now I'm just waiting for my purchase + application to be processed. I was able to complete my application by not using the Apple Developer Apps. The iPhone app and the Mac app did not work for me. The online registration process seemed to work for me.