Can no longer see completed orders

Hi guys,

Need help.

My Woocommerce suddenly does not show Completed orders in the order list.

My orders total shows 562 orders, but there is no option to see completed orders and after clicking show all orders – there are just 3 pages of orders. All the completed orders are gone.

What could have went wrong?

The page I need help with: [log in to see the link]