Welcome to the forum, I see that most of the discussions are about the wallets or social medias that can be connected to your platform. It's not new to me as that's what I've seen with many other websites that has alternative registration but I guess it's the first time or a few times that I've seen that github is being allowed to.

I agree about adding a manual way to register into your platform because people are scared to register with new websites that they aren't trusting yet but willing to try.

Also, about the design, there's too much below when I scroll down. Try to maximize that space and it will be an ease for the visitors to see some logo of the cryptos that you're supporting at the most bottom part of your website.