Reconfigure Old Website on PHPWebHosting

I need help reconfiguring an old website that we migrated to PHPWebHosting. We moved all the files from the prior server, but now I'm facing several issues.

Requirements:
- Fix backend functionality and database management
- Resolve pages not loading correctly
- Fix database connection problems
- Repair multiple broken email and domain structures

Ideal skills and experience:
- Strong PHP and database management skills
- Experience with PHPWebHosting
- Troubleshooting skills for website migration issues
- Ability to work without detailed documentation

Please provide a detailed plan and estimated timeline.