Fix SSL Issues on Website

My website prototype is hosted on a web hosting service (like GoDaddy or Bluehost). I recently installed a new SSL certificate, but now I'm facing security issues that prevent the site from opening on other devices.

I need someone to:
- Diagnose and fix the SSL certificate issues
- Ensure the site is accessible without security warnings on all devices

Ideal skills and experience:
- Strong knowledge of SSL certificates and web security
- Experience with popular web hosting services
- Ability to troubleshoot and resolve browser security warnings

Your expertise will help me ensure my website is secure and accessible.