Mine is working, so here is the result of a working connection for reference:
Test beginning
UserAgent = 'GRLevel3/2.60 (Windows/10.0)'
=====================================
Calling InternetGetConnectedStateEx:
dwFlags = 0x0012
INTERNET_CONNECTION_LAN
INTERNET_RAS_INSTALLED
szConnection = 'LAN Connection'
==================================
TestFullGet:
full GET was successful, status = 200!
last modified time = 2017/06/11 19:15:41
=====================
Test completed
I am using AllisonHouse for my data, not NWS. There was a change to the NWS servers over a year ago, but I would expect that a fairly recent version of GRLevel3 would have taken care of this. From the support forum, it affected versions 2.40 and earlier. Your 2.60 should be OK.
Greg H.