Checkmarks disappeared from the project "Learn string manipulation while building a cipher"

hello, I have recently been going through the Scientific Computing with Python exercises, and am finding them helpful. However, under my profile and the first exercise for this module, about 5 of the checkmarks disappeared for lessons that I certainly completed. I am not sure if this will hinder my moving forward through the projects part of the course, but I thought I would let you know that there seems to be a malfunction. if there is any way i can help, I would happy to, if pointed in the right direction as to where i could find the code. otherwise, i appreciate your time and the freecodecamp platform very much! take care, adam

Now lessons are being added to the beta courses,mso you haven’t done these added lessons yet and they aren’t marked off.

OK, then I will go back through that lesson. Thanks for the prompt reply!