You buy from the business named at checkout. Uvera supplies the software and does not hold your money.
An order is for one business and the item shown. It cannot be redeemed for cash or used elsewhere.
Until it is used you can ask for a refund. The business decides, and the licensed payment partner returns the money.
Fiscal receipt timing, voucher expiry and what happens to unused value are awaiting written tax and legal advice. They are shown before payment and may change before launch.