It happened to one of my accounts too.
Still waiting for the miles showing in my MileagePlus for another account. It shows only on their site.
This site is too buggy. You may click the "contact us" to see how to fill out the form.
well, i only have 1 account. unless i am willing to lose all my existing miles, i dont think i should open an new account. i did try contact page but they do not have any tech support. they just have their sales support and miles award support. i shot them an email anyway.