Enviro Urban Kit review concern

Hi, I was about to check out an order including the Enviro Urban Kit, when I saw a review that said it wasn’t suitable to for “temperate climates” like the UK. I find this a little puzzling for a produce from a company based in Sheffield :) The reviewer said that their Enviro Urban board had failed after a couple of weeks due to dew in the Stephenson shield. Is this a real issue? How are others finding this kit?