OpenCart 3 Core Session, Cart Sync, Checkout Bug Fix & WebP Image Optimization

We run an OpenCart store (hosted on a cPanel VPS behind Cloudflare) and urgently need a verified OpenCart & server specialist to fix a critical session/checkout breakdown and optimize store assets today... (Budget: $30 - $250 USD, Jobs: AJAX, Apache, Cloudflare, cPanel, Linux, MySQL, Open Cart, PHP, Troubleshooting)