Using link for providing additional bug report information causes "Request method 'POST' not supported"

[some-java-user-99206970363698485155 at vodafonemail.de]

Hello,
I am currently trying to provide additional information for a bug report I have reported nearly a year ago. When using the https://bugreport.java.com/bugreport/bug_info.do?bug_id=####
URL I got from the mail back then and press the "Submit" button once I have filled all required fields, I see an error page saying:
> Request method 'POST' not supported

Browser: Firefox 88.0.1 (64-Bit)

Kind regards