Fix backend API error and complete registration flow

I need a web developer or network specialist to debug a persistent backend error during the registration process on a specific e-commerce platform. The Issue: When submitting the standard registration form, the request hangs for ~6 seconds and returns a generic server error instead of completing... (Budget: €8 - €30 EUR, Jobs: API Integration, Backend Development, cURL, DNS, Network Administration, PHP, Python, Software Architecture, Web Scraping, Web Security)