Hello, good morning, I have a problem that a client notifies me when he notices that his purchase at an event was not counted in the available seats for the event.
The payment gateway is MercadoPago and the payment status was synchronized with the order, going to "Completed" status.
The event is recurring and allows you to pay a 50% deposit.
I attach screenshots of the order, the details of the event and where it shows that no one has yet purchased this event.

Hello Stefan, good morning, apart from MercadoPago, the Bank Transfer payment option is enabled and as an extra detail I can add that some events have the option for deposit payment enabled.

The payment statuses through MercadoPago are properly configured both for the creation of the order and for the change of its status.

Hello Stefan, I am trying a solution with a snipped since I found a lot of information about it and the problem would be the MercadoPago payment gateway.

// Automatically updates order status to COMPLETED
add_action( 'woocommerce_order_status_processing', 'update_order_status_to_completed' );
function update_order_status_to_complete( $order_id ) {
     global $woocommerce;
    
     //ID's of the payment gateways it affects
     $paymentMethods = array( 'woo-market-payment-custom', 'woo-market-payment-basic');
    
     if ( !$order_id ) return;
     $order = new WC_Order( $order_id );

     if ( !in_array( $order->payment_method, $paymentMethods ) ) return;
     $order->update_status( 'completed' );
}

Hello Stefan, good morning! I actually solved it with this snippet.
The problem was not with Amelia so this ticket can be closed.

Thank you for your attention.