This is batshit crazy. It requests the person wanting to claim his BTG enter his private keys into an app on an android phone.
Nobody should every do that.
anyone who hasn't already emptied their bitcoin from that address gets what they deserve.
if your bitcoin gold gets stolen, meh.
i've done it that way with coinomi for bcash. it was fine.
3% I'm back to officially ignoring this puppy. Not worth the hassle. Wake me up when something pumpy happens.