Thanks for the fast reply!
Editing the file names inside the project worked, but sadly i can not edit any settings inside the GitHub integrations. On every try to save changes the error Failed to create a branch in Crowdin appears. Looking into the issues tab, the error description is that this action is not available in my subscription plan.
Does Crowdin changed the requirements and the GitHub integration is now only available inside the business plan? In the market place it’s still listed as FREE but it is literally not usable in any form. Even removing and adding the repository inside the integration and reconnecting the GitHub account did not helped.