I haven't had any problems with mine either, just following the instructions that were provided and viola, it works and I have access to the online account at citi.com.
This could be its own thread, but I clicked on one of the yahoo articles about Costco's Visa switch and how angry members are!! There was another link to Costco's home page on Facebook and the hundreds of comments on there from people are almost comical. I can definitely understand how frustrating it is to call someplace and be on hold for hour(s) then get disconnected, but really? Why didn't anyone plan ahead? I guess I have too much faith or belief in the common sense of the general public or maybe a step up from the general public if they are Costco members.
If I hadn't received my personal or business cards by the activation date of the 20th, I would have purchased AT LEAST a week or two of items that I needed so I wouldn't have to worry about any issues in the first few days of the switch over. What do people expect with a change of 11+million cards? Everything would go smoothly and there would not be any issues? Heck I even stopped using my AMEX on the 18th so I could have a clear stop and start date between AMEX and Citi. And if I just had to go to Costco for something on Monday or later, I would have brought one of my other Visa cards or my debit, or cash or heaven forbid, a checkbook, if I can remember where I put it.
Some of the comments range from being total clueless that AMEX wasn't going to work on the 20th (I guess they didn't see all the signage, news articles, mailings about the change) to whoever thought up the change should get fired (the CEO of Costco needs to get this fixed ASAP and issue a public apology!!)
That this switch isn't worth the few bucks that it will save (try millions, not to mention the better rewards for the cardholder) and what Costco/Citi is going to do for them for the inconvenience of not having their card yet, getting a messed up card, or for not letting them know that their other AMEX card wouldn't work either. I am sick of 'you owe me' attitude for a minor inconvenience, it has been too ingrained in our society that you get a reward for being slightly inconvenienced.
So for a little entertainment take a look.