in talking with paypal tech support, i found out that the Paypal premier account will work with eCart using the Payments Standard choice.
It will not work with the Payments Pro; person must have a Payments Pro account for that to work with eCart.
thanks for your support.
One more issue on a website that has been running ecart for a few years with paypal Payments Standard and just noticed that when it goes to paypal checkout, it only offers 2 payment choices
1) Already have a PayPal account
2) Create a PayPal account
Previously, the choices were paypal account or pay with a credit card.
Do i have a setting wrong in eCart?