Plesk Recovery Assistance Needed

Plesk has disappeared from my server following some recent changes. I need an expert who can help me recover it.

Ideal Skills and Experience:
- Proficient with Plesk and server management
- Strong diagnostic and troubleshooting skills
- Experience working with both Windows and Linux servers

Please note:
- I do have the credentials to access the server.
- The server's operating system is currently unspecified.
- Recent changes have been made to the server before Plesk went missing.