results: Array
(
[member_ref] =>
[activity_id] =>
[activity_date] => 2021-01-01
[activity_type] => Subscription
[activity_description] => 2021 EASE subscription
[activity_cost] => 47
[renewal_date] => 2021-01-11
[payment_date] => 2021-01-11
[payment_reference] => WP14570615990
[invoice_date] =>
[invoice_reference] =>
)