trash bin and IPN ?

i have been taking in orders perfectly, but suddenly i had an order in PayPal but not in the ‘Cart Orders’ on my WP backend. for this order, i had the debug log file on and captured this:
Array
(
[wp_cart_id] => 2134
[ip] => 47.152.210.111
)
[11/01/2016 5:14 AM] – SUCCESS :Order post id: 2134
[11/01/2016 5:14 AM] – SUCCESS :Checking price. Original price: 10. Paid price: 5
[11/01/2016 5:14 AM] – FAILURE :Error! Post payment price validation failed. The price amount may have been altered. This transaction will not be processed.
[11/01/2016 5:14 AM] – FAILURE :Original total price: 10. Paid total price: 5
[11/01/2016 5:14 AM] – FAILURE :IPN product validation failed.
[11/01/2016 5:14 AM] – SUCCESS :Paypal class finished.

why would i get this? and it seems as if the customer wanted the change the order quantity in PayPal. i went into PayPal to try an order (without completing it) and could not change the quantity. i turned on IPN and tried to resend the order but got this:
Array
(
[wp_cart_id] => 2134
[ip] => 47.152.210.111
)
[11/01/2016 7:45 PM] – SUCCESS :Order post id: 2134
[11/01/2016 7:45 PM] – FAILURE :Order ID 2134 does not exist in the database. This is not a Simple PayPal Shopping Cart order
[11/01/2016 7:45 PM] – FAILURE :IPN product validation failed.
[11/01/2016 7:45 PM] – SUCCESS :Paypal class finished.

i looked in my trash folder and this Order ID is in fact missing. is their a way to create this order again so it can be sent to the ‘Cart Orders’ page and my customer can get their email notification?

i also have at least 10 empty orders in my trash folder. i am aware that orders reside here until the order is complete but it has been 10 hours for some. are these created as soon as someone puts something in their shopping cart weather they go to PayPal or not?

thanks!!