CS-Cart 4.6.3 was released October 31st, 2017 and they're now on 4.17.2 with Multi-Vendor versions now (like ETSY with multiple sellers).
CS-Cart has dramatically grown since 2017 and many software owners are in need of a new module that'll support the newer cs-cart versions to allow their vendors (aka sellers) to be able to connect their stores as well. This is my issue too and would be greatly appreciated if you could make it work. I'm running CS-Cart version 4.15.1 SP2 multivendor plus.
Here is one of the CS-Cart threads of people looking for an updated integration solution.
