unable to install UK TV NOW add-on

I’m new to Kodi and am trying to install the UK TV NOW add-on. I have followed instructions on several sites but the UK TV NOW add-on does not appear in the METALKETTLE repository. I am running a Microsoft Vista Laptop and version 17.0 of Kodi. The version of the METALKETTLE repository is 1.7.3. I have followed a similar process to install the Freeview Add-on and also other add-ons within the METALKETTLE Repository and this works fine. In the METALKETTLE repository there are 26 Video Add-ons.

I’m just stuck to why I can’t see this Add-on.