Hi,
For your HikaMarket question, please use the HikaMarket forum, otherwise I won't be notified on questions for HikaMarket unless I made a manual check of the HikaShop support team notify me.
Can you please indicate which "paypal" plugin you are using ?
If you are using paypal adaptive, all recipients should have an amount so if you are not using fees, your recipient won't have any amount and paypal will refuse it.
The plugin is configured to always put your store as the primary recipient for paypal adaptive.
I will suggest you to use the "classical" mode in the paypal adaptive plugin and use the limitation of vendors.
At this moment the plugin will pay only one account in the same time (one vendor) and pay directly his paypal account.
With this mode you can have "no fee".
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.