For each investment, you receive a QR-bill by email and in your account under "Invoices". You use it to pay the amount invested and the fees. There is no prepaid account at Cashare.
Pay the invoice within 5 days of the end of the loan project, using your banking app or e-banking. This is the only way the loan can be paid out on time.
Direct debit: Instead of making the transfer yourself, you can have the amounts collected by LSV+ (banks) or Debit Direct (PostFinance). This also applies to investments made by Auto-Invest. How to set up direct debit is explained in How do I set up direct debit? Make sure there are sufficient funds in your account; a fee is charged for a returned debit, see the fee schedule.