Same here - everything went quite smoothly. Purchased 2 GA's for Nashville using on the "Best Available" option. Only wrinkle, if you want to call it that, is that even though I was purchasing on my phone, the link on U2.com sent me to the desktop version of the Ticketmaster site instead of the mobile one.
That said, it is pretty crazy that some long time subscribers did not get a code this time out. Makes no sense.