Whs Router Problem - Request For Help!

Hi,

I have been running WHS for over 12 months with Lights Out closing the system down when I logged off the main desk top PC. The lights out version is 5.3.1819. I recently upgraded to fibre broadband with Talk Talk and installed the supplied HUAWEI HG533 router.  

Ever since the above changes the WHS closed after about 6 minutes. If I disabled Lights Out or uninstalled it - no problems - so the issue would appear to be with the router and the installed version of Lights Out.

Can anyone help with setting changes with Lights Out or the router that would allow Lights Out to perform as normal.

Thanks