Fix Namecheap to Gmail Integration

I need help with integrating my Namecheap webmail into Gmail. I've tried using Gmail’s Import mail and contacts feature, and I've double-checked all settings.

Requirements:
- Diagnose and fix the issue
- Ensure all emails appear in Gmail

Ideal Skills:
- Experience with Gmail and Namecheap webmail
- Familiarity with email import settings and troubleshooting

I'm looking for a freelancer who can efficiently resolve this issue. Please provide a brief overview of your experience.