i cant load German Language ... in 8.2 works ... they say ... your Key support only 1 Language ... but why works on 8.2 and why cant uninstall english ?
If you cannot set up default language as German you can try to use the following KB article: http://kb.swsoft.com/en/3526
It for linux but for windows I think you can perform the same sctions.
Also if you have two language on Plesk 8.2 (English and German) In that case I can suggest you to contact with sales engineers and ask them clarify.
BlackMoon, are you really able to use German with your Plesk 8.2 installation? By default Plesk comes with English. If one wants to have it in German/French/Chinese or whatever he/she should add Language Pack to the license. I.e in your case you have to have a Language Pack on the license, otherwise you may not change English to any other language. Do you have one? If you are not really sure you may request this info at: