[Gelöst] Assistance needed - lost all pages after WPML install

Background of the issue:
I installed WPML on my site versteckter Link. I am trying to get assistance because I lost all the pages after the WPML install.

Symptoms:
Lost all pages after installing WPML. The solutions mentioned in the threads don’t seem to be working.

Questions:
How can I recover the lost pages after installing WPML?
Are there any additional steps I should follow that are not mentioned in the documentation?