[Gelöst] i need to delete the associated content from database

Background of the issue:
I need to delete the associated content from the database on my site versteckter Link. I am trying to delete the content, but I keep seeing the message to delete them again. I am also looking for a way to activate back the custom language.

Symptoms:
When I try to delete the associated content from the database, I see the message to delete them again.

Questions:
Is there a way to activate back the custom language? or to delete complete the content of deactivate languages?