I don't know what you mean by changing regions in crossepg downloader. It only has providers, not regions. Anyway, if you are just using UK/28.2 services......
Uninstall EPG importer to avoid confusion.
In CrossEPG downloader, disable all xml providers.
In CrossEPG downloader, enable OpenTV 28.2. Make sure it has a tick.
This will get EPG data for UK/28.2 services directly from the satellite.