Resolve Facebook-Perfex CRM Leads Sync Issue

I'm currently encountering a frustrating problem with my Facebook Leads App and Perfex CRM (Codeigniter) integration. For some reason, the leads from Facebook are not syncing with the Perfex CRM. No specific error messages have been displayed during the sync process. To remediate this issue, I've done reinstallation of the Facebook Leads App, but unfortunately, the issue persists.

The ideal freelancer for this project would have a deep understanding of the Facebook Leads App, Perfex CRM (Codeigniter), and their integrations. Experience in troubleshooting similar issues, with proven results, is essential.

Key tasks:

- Investigate the issue causing the failure of Leads Sync
- Identify and implement a robust solution to ensure smooth syncing
- Document the problem and resolution for future reference

Skills and Experience Needed:

- Proficiency in CRM systems, specifically Perfex
- Comprehensive knowledge of Facebook Leads App
- Familiarity with API troubleshooting
- Experience in Codeigniter platform
- Ability to work through complex technical problems