Check whether there are bank emails in the Invoicing Bank E-mail tab.

If they are not there, it is necessary to find out whether the connection to the email account works correctly. You can do that in Invoicing Settings Bank Bank - e-mail (Connection test).

Check whether bank emails have been wrongly classified as Bulk. If so, move them to the Inbox folder so that payments can be imported to the system.

Payments can be manually added to the system in Invoicing Payments Payments.