Need some help to match a PUBG ID from a Steam ID 64

Hi there,

I am searching a way to match a PUBG ID from a Steam ID 64.

My website uses Steam Oauth and I would love to get PUBG infos from the player but I can’t find any way to do that.

PUBG API doesn’t provide that information and bluehole told me that they won’t implement this through the API for security reasons.

BTW it’s for security reason too that I would love to make that auto match rather than asking the player for a PUBG username. Steam Oauth is safe ; I really don’t understand why they don’t want to implement that endpoint.

Anyway I understand that FaceIt was able to do it, so I am wondering if any dev can tell me how they did it ?

Thanks by advance