Wanna trade

I personally prefer blockchain

Don’t give out your address to people. Don’t invite the devil to your door

Random risk-averse people aren't going to give you their contact details. Stick to group chats of people you know or start forming those sorts of relationships in order to trade seeds in future... Over the years here, I've found 3-4 local people that i regularly swap genetics with. None of them use the site anymore, but doesn't matter now. Also, there's a potential your invitation is an opportunity for a scammer to fuck with you.