Allow custom fields in the checkout step

I’m currently using Gumroad for my software licenses, but would like to explore running this through you instead.

However, I need to be able to collect custom data from the customer, such as the name and ID of the app in which the license is to be used. This is really easy to do on Gumroad and makes it possible for me to ask for mandatory info and approve terms and condition before a purchase can even be made.

Saly, not having the opportunity to add custom fields is a dealbreaker to me, so I hope that this is something that you would consider adding support for.

Custom fields are very much needed — sometimes I want to ask for more info than it’s by default, like Telegram username for the private Telegram community access.