Registration Plugin redirecting to Admin Console Login

I’m having an issue with the Registration Plugin. It was working perfectly on Monday, and now, today, when a new user tries to sigh up by going to https://website.com:9091/plugins/registration/sign-up.jsp, they get redirected to a page wanting an Administrator to sign in. If I go to their computer, and sign in with my admin credentials on that page and click Sign In, it then shows the signup page.
I haven’t made any changes other than updating out SSL Cert at the beginning of the month. But that was a couple of weeks ago and this just started today(Wednesday, 15th of Jan).

I’m running Openfire 4.9.2 on a CentOS 8 VPS. I’m not sure what could be causing this. Any ideas?

Curious. Did you restart Openfire after updating the certificate?

Does reloading the plugin fix the problem? Does restarting Openfire fix the problem?