Happened to me today. Tried to click the refresh/sync button on left-bottom corner?

Yeah.. today when I tried to log-in to my Battle.net at their website, the authentication always fail and I wondered why.. clicked the refresh at my phone, numbers updated and can login already

i also face the serial number problem now, again actually

both the iphone app and the real authenticator cannot be used. both give me the error of serial number wrong when i want to attach it.
previously, i bought 1 from authenticator token from blizzard, but serial number error. Blizzard can't resolve it hence sent me another. this time can attach liao. then after that i din't play WoW anymore, I took away the authenticator.

then now, i want to reattach it back, it says serial number error

then I try to download the iphone app, again, say serial number problem

open a ticket, asked me to call them, but when i tried to call the number, it says "this number had bar all incoming calls" :S