Urgent Website Debug & Fixes - finish in 2 hours

My client’s site, myworkout-magazin.ch, needs an immediate health check and surgical repairs. I can give you server and CMS access the moment you accept, and from that point we have a strict two-hour window to get everything done... (Budget: $200 - $500 USD, Jobs: Debugging, HTML, Performance Tuning, PHP, Web Development, Website Design, Website Optimization, WordPress)