If you haven't received confirmation yet, you may want to email registration directly to ask for confirmation that way. I know that the registration staff position has been in flux this year, and the registration head stepped down recently, which may have something to do with the issues. I believe the registration email addy is accessible from the con's front page though, if you want to give them a hollar. But rest assured, you won't be made to pay price, we promise!
PezCat