Urgent Website Password Fix

I'm urgently looking for a skilled website developer, specifically experienced in troubleshooting password protection issues. A specific page on my website (https://dblr.com.au/issue2) is not working correctly with its password-protection feature (page is currently in private). I need this repaired as soon as possible. If you have a background in fitting websites and are able to address this issue promptly, your skills are ideal. Your immediate attention and fast turn-around will be greatly appreciated.