Paypal Standard - Invalid Amount Error

Hello,

I've checked the documentation and forums, nothing seemed to resolve this issue. This happens sporadically so not sure what the cause is.

For Example:
customer tries to check out product and get this email:

Hello,
A Paypal notification was refused because the amount received
(485.22CAD) is different from the order amount (429.4CAD)

Check the documentation concerning this issue at
www.hikashop.com/index.php?option=com_up...-paypal-error#amount
This notification was for the order B2D6 on the website
http://www.[BLANK].com
You can access the order details directly by clicking on the link
below after logging in your back end:
http://www.[BLANK].com/administrator/index.php?option=com_hikashop&ctrl=order&task=edit&order_id=26

The customer goes back and tries again. Goes through fine.

I have tested this myself by creating 1$ items and it goes through fine. We've had this occurred 3-4 times. I was able to extract some information from a previous order

Paypal Order Details:
Item: $400.00 CAD
Shipping: $30.00 CAD
Subtotal $430.00 CAD
Tax $52.00 CAD
Total $482.00 CAD

Hikashop order Details:
Sub total 452.00
Coupon 0.00
Shipping 33.90
NB 55.90
Total 485.90

I have removed the details info being sent to paypal in hope only the "total" would be sent. This still occurred (First example I have was the case).

I tried this but the code does not seem to be the same so I couldn't figure out where to change this. ( www.hikashop.com/en/forum/4-how-to/32453...ror-10413.html#32453 )
Please advise

That's the first thing I had asked to check. Checked myself and it was in fact there. I disabled the tax in Paypal so this should resolve the problem.

Loving HikaShop! Thanks!