WordPress Expert Needed - Fix Navigation Issues After Server Migration

I recently migrated my WordPress site to a new server, and the navigation menu is not displaying properly. I need an experienced WordPress developer to diagnose and fix this issue quickly.
The Problem:

Site was recently migrated to a new server
Navigation menu is broken/not displaying correctly
Site otherwise appears to be functioning

What I Need:

Quick diagnosis of the navigation issue
Fix the navigation to display and function properly
Ensure the site is working correctly post-migration
Brief explanation of what caused the issue and how it was resolved

Requirements:

Proven experience with WordPress (please share examples)
Experience with WordPress migrations and troubleshooting
Ability to diagnose and fix issues quickly
Good communication skills
Available to start immediately

To Apply:
Please include:

Your experience with WordPress migrations
Similar issues you've resolved
Your estimated time to complete this fix