Placed order going on hold

Hello Support,

It is an urgent issue on my site. I have using the authorize.net payment gateway in my WordPress-Woocommerce site. When my client buys products on my site & pay me using authorize.net payment gateway. Incurrent order status is visible on-hold in WordPress backend. Due to mail-enabled in Woocommerce. The order information goes to my customer email. It creates a panic situation for my customers. Because they pay money for a product. And they got on hold statuses for their orders.

Please provide the solution to this major issue. Because it affects my customer relationship.

Thank & Regards
Divya