Please try the solution described here Quantity and purchase note required We tested it locally and it seems to work. If it doesn’t work make sure that it’s added correctly, you can also disable other HivePress extensions that may conflict with the quantity field just to check, e.g. Bookings if you have it installed. We tested this locally with HivePress and Marketplace only.
Thanks for reporting the support badge issue, I guess there’s something with the payment provider API, I’ll test this further.