Hello!
We offer translation services and our clients can book them on our Viart page. They get zero-bills and can checkout without paying (coze zero in bill, we provide here the "personal payment system"), BUT all bills are paid in our system.
When we change the price in the bill and set their status to 1st or 2nd, our clients can not pay them through Viart (no payment link, just a link to view the bill).
So my question is how can I do a paid bill to an unpaid bill?
Thank you for helping!