Can you connect OK to trixology-test.dyndns.org? If that's fine, it's likely something internal to your network.
The iOS apps worked flawlessly for me for a long time and I have not changed anything in my network setup. Frustrating ins't it?
Another twist. After my last reinstall of WeatherCat, I've found that if I click the home button to close the WeatherCat window while it is in its checking settings hang, when I return to the app it gives me readings, but the readings I get are those of the trixology-test site, not mine, even though the network setting has my address selected.
What about DynDNS. Could that be the culprit?
I got frustrated and just stopped trying. Interesting about the software updates. I'll have to try updating my iPhone this evening, and if that doesn't work, I'll reinstall Yosemite.
Just noticed both the iPad and iPhone had "lost connection".