PHP Bug Fixes for News Site

I run https://www.newsvenus.com/index.php and a handful of glitches are hurting the user experience. The core platform is plain-vanilla PHP with a sprinkle of MySQL, so I need a developer who feels at home debugging legacy procedural code as well as the occasional modern class... (Budget: $8 - $15 USD, Jobs: Debugging, HTML, MySQL, PHP, Software Development, Web Development, Website Design, Website Optimization)