ich möchte in den Einstellungen vom EU server in den Amerika server wechseln damit ich die Dateien öffbnen kann

Do you mean to transfer your forms and data to EU server? If so, this can be achieved by selecting the option to store data only in Europe from your account settings page.

Please refer to the blog post for more information on EU Safe Forms.

http://www.jotform.com/blog/178-EU-Safe-Forms-Our-Solution-to-the-EU-Safe-Harbor-Invalidation

Let us know if you are referring to something different. We will be happy to help.