I would be curious to know how it was worded at certain places. Speaking from prior experience in the Verified Fan deal the two times I took part in it, it was explicitly mentioned on one that there was no guarantee I would get a code at all. Another one stated I'd have to register by a certain time to get a code after pre-ordering an album.
Here's the language I got in one e-mail...
Please Note:
Registering does not guarantee you will receive a code or have the ability to purchase tickets.
What's Next?
If verified and selected to receive an offer code, you’ll receive a text on XXXX prior to the presale at 10AM ET. Your text will include your unique offer code and link to purchase your tickets. Keep your phone handy – notifications may arrive 2-4 hours before the presale.
Details for your #VerifiedFan Presale
Registration must be completed before XXX at 10AM ET. Registering does not guarantee you will receive a code or have the ability to purchase tickets.
And another...
As a reminder, if you PreOrdered a copy of XXX through our webstore, you MUST sign up through Verified Fan to be included in the Ticketing presale for Group A.
Sign up here to be included in Group A: https://XXX
After you have signed up through Verified Fan, refresh your page to see your new Group A location. Codes will be sent out to Group A members on Sunday, XXX.