Why is our 'what is my ip' tool still struggling with accurate proxy detection? getting desperate!

i'm seriously losing my mind over this ip tool, it's still failing so hard. users behind proxies or vpns are consistently getting completely wrong ip addresses, causing major data issues for us. our accurate proxy detection is non-existent right now.

--- IP_TOOL_LOG (2024-10-27 14:35:12) ---
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)
X-Forwarded-For: 10.0.0.1, 192.168.1.100
Detected-IP: 192.168.1.100 (LOCAL/PRIVATE)
Expected-IP: Public IP of proxy/VPN
Error: IP_RESOLUTION_FAILURE: Unable to determine true public IP behind proxy.

we urgently need robust proxy detection methods or maybe we're just missing some super obvious pitfalls. what gives? this is driving me nuts.

thanks in advance!