Questions about the estimates, running several creators' channels from one account, or an invoice — send it over. GreenReach is a small team, so the reply comes from someone who worked on the thing you're asking about.
Prefer email? hello@greenreach.app for anything general, or billing@greenreach.app for billing — quote your invoice number if you have one.
You don't need to talk to anyone first. Connect a channel and GreenReach gives you an estimate; funding projects is a separate decision you can make later, or never.