Hi,
For paypal pro, I used a generic non-working credit card that we generally use during tests.
I got an error message in the joomla message zone.
For paypal (classical), it was a paypal message after the redirection to their website.
Maybe it was something wrong in my address. If it works for you so it should be good !
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.