I finished two course completely and now they are reset

I finished all steps of Python Sudoku Solver and Binary Search Tree and got the check mark. The next day, I opened the site and now these two courses are back to 0%!
They are not even displayed in the history of my account as the previous courses.
Now I have to repeat them again?

HI @amro.khorshid !

Welcome to the forum!

Changes have been made recently to the curriculum in order to better serve the needs of the freeCodeCamp community.

The lessons and project steps which have been added or substantively changed will not be marked as “completed”, which can impact your reported course competion percentage. This will not impact claimed certificates. If you have already completed a project, then you are not required to complete the new steps. Any lessons which are not part of a certification project are always optional.

Only the 5 certification projects count towards the certificate.

hope that helps