Interesting concept. I have a LOT of questions. I am going to start with the most pressing ones.
Where do the invite tokens actually come from? It seems like I need an invite token to actually activate my wallet. Though it seems like the key generation was actually done before receiving the token -- at least I got my seed already. Are these tokens coming from the Merit foundation? If so, isn't that a tad centralized?
How long has this project been in development? The roadmap says that the first release was December 2017, but I see 30k commits on Github. When did you actually BEGIN development?
1) Invites are generated like coins are mined on the blockchain.
2) Should join the discord server and ask Adil yourself

He can give you a solid date of when he started coding it out.