Disappearing youtube private messages

I’m corresponding with a person who films unusual events on the Moon, in regards to the upcoming moonbusting event. We exchange private messages on Youtube. I’ve send him contact details to Don, as they are in the same time zone. After waiting couple of days I’ve repeated a request for him to email Don. He replied that the message that included Don’s email address is not in his inbox anymore and that it’s weird. I have send another message so it’s interesting to see if the contact will finally take place.

Disappering emails is a very cool feather in your collective cap and always means the sewer rats are desperate at stopping a personal or business exchange. Personally I only had emails being returned with strange error messages - major red flag and confirmation when just starting out with gifting.

Carlos