Power kit Gen 2 5KVA and Smart generator 4000 used in UK

I am interested in Ecoflow products to build campervan in UK with following questions;

(1) Power kit Gen 2 5KVA

* Does it support 220V~240V/50 Hz AC specification with both AC input charging from external source such as shore charging or smart generator as well as AC output to internal campervan appliances?

(2) Smart generator 4000

* Does it support 220V~240V/50 Hz AC output?

(3) Power kit Gen 2 5KVA charged by Smart generator 4000

* Does it support both DC and AC charging?

* Which mode AC or DC is faster?

* If 10KWh LFP battery is used, how long is the roughly estimated charging time?

Lastly, where do I buy them as I cannot see them in UK Ecoflow website, but only see in Ecoflow USA website?