Hi Jochen,

Can you please share your site credentials here, because we need to login to your site and see this issue live. Your information is safe (private) in this thread.

To include your credentials click Insert Credentials button in editor toolbar. (See how)

Hi Schorschebft,

Thanks for the credentials, can you tell me what were the problems that occurred when trying to install the demo content? And which demo content are you willing to install so I can proceed with it.

Hi Schorschebft,

Your site is mixed with content, I was asking you which demo content you want to install:

(view large version)

Hi there,

I have reset your whole installation and installed it from the beginning, then after the successful import I have set the Homepage manually to the Homepage page, for this please read more on this WordPress article.

Hi there,

You should be able to login now, the password and user isn't changed but try again as there might be a caching issue.

For the language,  you can set it back to Deutsch in seconds as I told you I am gonna reset all your site to do a clean installation, now the site is reset and the theme is installed with the demo content in it.