Fix Gravity Forms Attachment Issue

I need help fixing an issue with Gravity Forms where attachments are not being received via email.

Key Requirements:
- Troubleshoot and resolve attachment delivery issues
- Ensure all types of attachments (images, documents, etc.) are sent correctly
- Check for conflicts with plugins or third-party services

Ideal Skills & Experience:
- Expertise in WordPress and Gravity Forms
- Experience with email deliverability issues
- Familiarity with troubleshooting plugin conflicts

Please provide a detailed approach and timeline.