I am here in no way to advocate for coin or dev, but I bought 5k coins and got them already in my wallet and have running MN now (this process took like 1 hour or so).
How long does it take for them to send the coins after your BTC payment had been confirmed? Within an hour as you said?
When I had 2/6 on my BTC transaction it showed the purchase on website and after like 30 minutes it has been 1/10 in my Gainer wallet.