Many online shops send payouts for multiple transactions as a lump sum. Unfortunately, Debitoor can't assign these amounts to the corresponding invoices because there is no way to discern how the lump sum should be applied.
You will need to manually match these payments to the corresponding invoices. Thankfully, this is an easy process:
Go to the 'Banking' tab and click on the payment. Select 'Payment for an Invoice' to see a list of invoices. Select one of the invoices that was paid with this payment. This process can then be repeated with the remainder of the payment and the other invoices.
For the last invoice, if there is a difference in the amounts, the following option should appear:
Click "yes" and select the category "Financial fees" and an expense will be created.