FAQ / For Customers of Retailers

For Customers of Retailers

How can I receive a refund for a fully paid order?
When will my order be shipped/delivered?
Does Lunu charge service fee to customers of retailers?
I accidentally overpaid my invoice. Can I ask for a refund of the overpaid amount?
I underpaid my invoice. What should I do?
Can I use my wallet to pay via Lightning Network?
Why is there a cost difference during the payment? or Why is there an exchange rate for Cryptocurrency?