Heavensward CD keys say invalid

Alright... I would like to adress this as soon as possible, for anyone else having the same issue please let me know! and possibly a fix for this! I pre purchased Heavensward on june 4th ( STEAM ) i have ARR Via steam aswell. so the june 19th comes around i put in my CD key on mog station like it says. and CD key is invalid.. I went through many different sites, tips hints and asking people how to fix this? and even SE phone calls and Live chats all that witch either hung up on me after in que for 4 hours or live chat where i would wait 6 hours in total over 2 days to get 1 in que just to get a message saying no one is avalable to help you at this time. I would LOVE to play Heavensward! i do not know where else to turn... Please help?