Fix Website Registration Form

The registration form on my website refuses to submit — every attempt ends in an error message. The layout and fields are already built; I just need the submission process to work smoothly.

Your task is to:
• Inspect the current HTML, JavaScript, and any server-side code linked to the form.
• Trace and explain the exact reason the form fails to submit.
• Apply a reliable fix so the form completes its workflow (database write, follow-up email, or other existing steps) without errors.
• Test across the main desktop and mobile browsers, confirming that users can register without a hitch.
• Provide the updated files or repo commit plus a short changelog so I can maintain the solution.

If you have experience troubleshooting website registration issues and can jump in quickly, let’s get this sorted.