It's clear the development of the English language versions have been stopped, but they are continuing to update the domestic versions (Roboscan is called ALYac in korea). Both products still receive definition updates, and Roboscan appears to be fully compatible with Windows 10, even though it does not offically support it, as it has not been updated since before Windows 10 was released.
I would not recommend using either product as you will be using an outdated product (even though you will get current definitions). It's common for AV vendors to discontinue their English products to just focus on the domestic market, or perhaps keep offering their current English products, but only release new products in the domestic language.