"Abandoned cart" option in Acymailing plugin?

Hello,
I know you say in other topics that there is no "abandoned cart reminder" for Hikashop, but I just installed the Acymailing Hikashop plugin and there is an option "abandoned cart" there that is not mentioned in the plugin documentation (on Acyba website)
example: {hikashop_abandonedcart:| type:title| nbdayscart:3}

I am confused on how to use this option: if I insert the tag it asks to set a time for "created but not yet paid", not sure if it refers to a cart or to an order though.

Besides, if I use this option so I still have to set a HikaShop Reminder filter to get it sent, but isn't that just checking orders and not carts?

I asked Acymailing developers as well, but they said to forward the question to you since it's you that developed that plugin.

Thank you

Thank you,
it was confusing because the tag in Hikashop actually say "abandoned cart"