Procedures - How do I use Leanpay as a vendor?

• Are there written instructions for the process of preparing the offer for payment in installments?
• I want to make an offer to the customer - but I can't find a link to the Leanpay app - where can I find it?
• What does "Offer valid until" mean when preparing the offer?
• Key information on Leanpay offer in one place
• How do I identify and verify a customer?
• How and when do I confirm the delivery of purchase or acceptance of an irrevocable order?
• How do I know as a salesman that the payment in installments is granted?
• Do I need to print a contract for the customer?
• What if the buyer wants to pay off the loan early?
• There is no "Verify" option in the transaction - how should I make a verification?
• How long does the credit granting process take?
• How to send a verification sheet to Leanpay?
• How can I make a client an offer to pay in installments through Leanpay?