Transferred Domain with qtranslate

Hi,

I just transferred a domain to a new webspacew and forwarded it to something like
https://webspace.de/domains/inkl-villa-sonne/

Now when I press the translation (flag) it directs me to
https://webspace.de/?lang=de
which is a complete different site. What do I have to do to show him, that it has to be
https://webspace.de/domains/inkl-villa-sonne/?lang=de

Thank you

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