During my last round of applications I also signed up for a Citibank ThankYou Premier Card with 50,000 ThankYou points as a sign-up bonus.
I was approved instantly and have now completed the minimum spend. My statement closed yesterday and I checked my balance which was at 23,008 points!
I called Citibank and they told me they have no record of that increased sign-up bonus for me 🙁
Luckily, I do have screenshots of the application, which the agent asked to be immediately faxed to 605-3572073. That's what I did just now.
Let's hope Citibank comes through with this!