Hi,
The vendor registration is working like the HikaShop user registration.
The translation "THANK_YOU_FOR_REGISTERING" is used and display in the Joomla messages (by emptying the translation, the message would not be displayed).
Depending if you're using the user activation, the translation "HIKA_REG_COMPLETE_ACTIVATE" can be use too.
About the displayed view, it is the view "vendormarket | after_register" and by default that view is empty.
But you can override it in order to display the content you want.
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.