I recently bought my first weather station (Oregon WMR-88) and am about to configure meteobridge on TP-LINK TL-MR3020 (plus USB hub). I successfully configured network, as I'm able to remotely connect meteobridge over Internet (from another network). The connection between weather station and meteobridge via USB hub works well, too, as I can observe correct data in the "Live Data" section. But I'm not able to get my data sent to Weather Underground. On the top of the "Live Data" section it says:
"2014-11-23 17:13:49 Error: wget: unable to resolve host address 'rtupdate.wunderground.com' (no more tries)"

The Weather Network section says (I triple-checked all inserted data):

An then, there is the bit worrying "No Internet Access" in the Network section, which may not be all true as, again, I'm accessing the meteobridge over the Internet.

My setup again is:
Oregon Scientific: WMR-88
TP-LINK TL-MR3020 (plus USB hub)
Any hints?
Best regards,
Marcin