How do I sync missing GoCardless customers?

1. Go to the "Debts" tab and click "Sync GoCardless"

2. Click "Export missing customers"

3. Open the file that downloads in Microsoft Excel (or similar)

4. Go to the "Customers" tab and search for a missing customer

5. Click the customer to edit the details

6. Input or update the email address and click "Save Customer"

7. Repeat steps 4-6 for all missing customers

8. Go back to the "Debts" tab and click "Sync GoCardless"