I don´t know what i have changed but i´m geting two confirmation emails and two messages evrytime when im sending only one message. Any idea what i have to change?

neu.loveboat.de/index.php/loveboat-tickets-kaufen-bestellen

Maybe this happend because i included the component via a plugin and I´m using this url code "index.php?option=com_aicontactsafe&view=message&layout=message&pf=1&redirect_on_success=" maybe this code is the problem... I can not see any comand for the profile "which should be the default profile with ID 1

No, using the component through the plugin doesn't create that problem.
And there are several ways to set additional destinations for the messages.
You have to check the parameters of the fields you added and the parameters of the profiles.
You can use the instructions available by clicking the "Help" button from the top right toolbar to understand those parameters.

I would say that all fields are configured correctly. I only added a mesage field to the defaulf form. Since this time all orders will be confirmed and writen do the database twice!

Now I managed (and please dont ask me how..) that this happends only sometimes. But it still hapends... sometimes. Im also wondering that the confirmation message will be shown twice !!?? It will be shown in the table whre i have included the form AND on top of the page !!??

Orders ?
aiContactSafe doesn't have any order section. If you have a customized script you need to ask it's developer to fix it.

I´m using the regular script as an order tool - but no changes have been made.

Not sure what is going on on your site.
Can you send a super admin user name and password to alex(at)algis.ro ?