The information that has travelled from when you registered is not editable on the project page in LearnIT.
If you need your title for the project changed you need to write to firstname.lastname@example.org. The title in STADS is the title that will go on your diploma. This goes for the supervisor as well.
If you registered with a project description and your project has changed, you are not able to update it on the project page. The problem statement though can be added and edited until the formal deadline. Afterwards you cannot edit it.
If you and your supervisor agree, you can implement any change you want in the actual project. Your project description or problem statement will not be part of the assessment.
If you have substantial changes to the problem statement, method or the like, you may want to describe them in an appendix or a summary about the project process in the finished project.