your buddy key is different than your forum account. this is why anyone can be a dick on the forums, get banned and still use HB. HB doesnt appreciate people acting out on the forums, but taking the software away is just plain mean. you might check if the update server is up. im not sure how that works. the reason i dont know how that works is i am still running the old version of hb with the previous version of wow. i choose to not run the updater through battlenet so that when hb goes down on patch day, i can still bot.
did you update wow with the last patch? if not, i can find you the old version of hb that will work with the last version of wow. if you have updated to the current version of wow, i may not be able to help
when i choose to update hb, i download the zip file and extract into a fresh folder. this is the path id recommend to you.