results: Array
(
[member_ref] => 5332
[activity_id] =>
[activity_date] => 2020-01-01
[activity_type] => Handbook
[activity_description] => Science Editors Handbook
[activity_cost] => 31.00
[renewal_date] =>
[payment_date] => 2019-12-27
[payment_reference] => WP12671013354
[invoice_date] =>
[invoice_reference] =>
)