You can try to delete and redownload the bot to get rid of any caching from the bot.
There is some cached data from bnet and HS in your userdir.
(win7 paths, AppData is hidden!)
C:\Users\username\AppData\Local\Battle.net
C:\Users\username\AppData\Local\Blizzard\Hearthstone
The last folder may contain a file "text_deDE.cache".
But I don't know if the bot reads them.