Hello,

When people order more than 1 item i get the following paypal error.

Your payment failed: The totals of the cart item amounts do not match order amounts.

Im using the order by quantity shipment gateway.

Ok i thought i had fixxed it by setting the shipping gateway to “one single flat rate for entire purchase”

When i order 1 or 2 products it works fine, when i enter 3 products i get that error :”

Your payment failed: The totals of the cart item amounts do not match order amounts. 10413 Try checking out again »

“

Ok i have found the problem i think. It has something to do with the calculations. Just need a way to solve it.

Our product costs 16.99 pound

Now if someone orders 1, you get a total price of: 16.99 + 2 (shipping) = £ 18.99 (wich works fine)
Now if someone orders 2, you get a total price of: 33.98 + 2 (shipping) =  £ 35.98 (wich works fine)

Now if someone orders 3, you get a total price of 50.97 + 2(shipping) =  £52.97! But my cart somehow says 52.96! (Where did that 1 cent go?)

Any idea how i can solve this?

Ok i solved it, my customer wanted his price to be exactly 16.99 ( + 6% tax ) so he filled in 16.028301 as price tag. Wich created that 1 cent problem.