Question about adding a training plan editor.

I’m using Figma as an education plan through university student authentication. I understand that you can invite editors to infinity for projects created by education plan users. The editor I invited over the past week used it without any problems.

However, from a few days ago, another editor received a message saying, “To edit this education team file from, verify that you’re a student or educator,” and it was impossible to edit. I wonder what kind of problem is preventing other editors from editing, and please answer me how I can solve it.