LTI showing full site in fram

Hi,

I'm using Moodle 3.9 als LTI client and 3.11 as provider.

Now i've selecte a single activity (it's a questionnaire) on te provider site but on the client site I get the enrire website with access to the activity but also the rest? What can go wrong? I just want the questionnaire activity to become available on the client site and not the rest of the providers site.

Anny suggestions?

Hans