Hi Serob,
you can contact us here: Contact - Capturing Reality
But since April the areas covered by customer support are just bug reports, crashes, and licensing requests for the most recent three versions of RealityCapture. Epic Direct Support is available to purchase for an additional $1,500 per Unreal Subscription seat annually with a minimum of ten Unreal Subscription seats. Epic Direct Support is not available for the standalone RealityCapture subscription seat.