FlightGift - after purchase process

Right. So someone bought me a flightgift voucher. I’m aware of how shit FlightGift is and the markup they charge etc but I’ve now booked the flight through their site.

I have a FlightGift reference number now, but will I also receive a booking reference for the actual airline at a later point? I wasn’t able to do seat selection on purchase, and will need to do things like advance passenger information later on. Essentially will I be able to manage my booking, check in etc direct with the airline? Or am I stuck dealing with this shoddy company throughout the pre-flight process?