I had originally downloaded the apk to my PC and transferred it to the phone. So to check, I stopped it, cleared data, uninstalled it then opened your site in the phone's browser and downloaded v2 directly to the phone. Installed it and tried authorising again it but still won't play ball. I've tried it with WiFi disabled using 3G data only and though I can open your site ok I still can't get it to authorize. I've also tried it on our WiFi network at the office and it behaves the same. I am getting a lock symbol in the browser when I open your site but I expect that's normal if it is a secure site. I've just tried installing v2 on a Samsung Galaxy Ace running Gingerbread 2.3.4 and it authorizes perfectly (I didn't try to use it of course) so it is starting to look like it is an access problem on the ZTE-T22 which is running ICS 4.0.4.
Ian