Google Ads Conversion Discrepancy Investigation

I've noticed an issue with our Google Ads. The conversions on our registration form are showing higher than what is being recorded on our WHMCS system. I need an expert to investigate and resolve this discrepancy.

Ideal Skills and Experience:
- Extensive knowledge in Google Ads
- Proficiency in WHMCS system
- Strong analytical skills
- Experience in debugging tracking issues
- Excellent problem-solving abilities