Open Notifications Stopped Working this Month (7/2025)

Hi all! I've had an app built for years that houses my internship program data.  It sends out an open notification to internship supervisors to evaluate our students' performance near the end of their internship. The notification contains a link that takes them into the app to complete a form which pulls goal data from the student's workplan to be evaluated on.  It last worked properly (was completed by a supervisor) on 7/6).  This week, particularly the last 2 days, my team started getting emails saying the link shows them the form for about a second, gives an error code, and takes them to a log in page.  Supervisors have never needed to log in before.  Just click the link and they access the form.

I'm not super savvy at Quickbase - any ideas on what happened/broke?