Hello,
Just to confirm here, you went to this site to submit a bug report correct: Unreal Engine Community
I tested the form to make sure it was still working and I had no issues submitting a report. Could you try again and let me know if there are still issues on your end.
If you do still have issues perhaps try clearing out the cookies and cache of your web browser. Just to be sure there is no bad cached data causing the problem.
Thank you.