I too am currently having issues using my own BTFon/Openzone SSIDs, but on my smartphone
(not checked the laptop yet)
Oddly enough, inSSIDer claims that BTFon and BTOpenzone are transmitting at 0dB - normally around 35dB
I've NEVER seen it like this
edit. Connected Laptop to Fon, launched browser, logged in via the landing page, and........
Tried again which took a few mins and now posting via my BTFon Hotspot
Now at another place. 5 out of 5 bars for signal strength.
IP addressing looks correct.
0 chance of getting a working connection