Import works but ACF fields are empty

After installing, setup and mapping I made the first import. The post was imported and created without issues but all ACF fields are empty. I tried with selecting the field(s) keys in the mapping from the dropdown example: “_whatever_field”, “whatever_field” and with the field ID created from PHP “field_618a30b760a92”. Also tried making all fields not required and matching field types (Rich Text from gathercontent -> Wysiwyg Editor in ACF)