eCart shipping and tax aren't calculating properly. My last test for a $3.50 1 oz item to Dallas Tx calculated $1 tax and $10.77 shipping.
Also, am thinking about reconfiguring for USPS to get a better shipping rate. Can this be done easily without starting over with the Checkout Wizard?
Lastly, attached is a screen grab showing 'Transaction Not Completed' error code.
Files are attached.