Classroom assignment leads to wrong repository


Our teacher made some assignments with GitHub-Classroom and every time when I try to accept it (it is the 3th he made, the ones before were OK) and the repository gets created, I get a CodeWars repo. The repository belongs to an user whether I nor my teacher knows.

My teacher could not resolve the issue and a few of my colleagues have the same problem. Deleting and reaccepting the assignment did not work.

Did anyone had the same problem and knows how to fix it? Or is this something new that will be fixed in a later update?