Hey I play on this account in US West and I am getting the message telling me that I may be connecting to an invalid server and stuff but I was connected to the US West server earlier today and I can still connect to the European server...this wouldn't be a problem but all of my accounts and stats are in US West.
The IP address last used by this account to access Lordaeron (USWest) was recently used to violate the Battle.net Terms of Use Agreement - http://www.battle.net/tou.shtml. The most common cause for this is connecting to Battle.net with an invalid CD-Key. followed by spamming the chat channels, use of flood or load bots, harassing another user, and/or the use of a third party program(s).
The IP address has warranted a lengthy restriction and will not be able to access Battle.net (USEast and USWest) for another 13 days.
Technical Support is available
7 days a week!, 8am-8pm Pacific Time
I'm not available Friday/Saturday