not sure why you would get a 413 error. Howerer - going wap.viparmenia.com from a desktop browser works a treat - but it seems that your wap. address simply redirects to you default URL with a styleid=xx parameter on the URL? This doesn't seem to be in keeping with how this add-on is designed...
Visiting
http://viparmenia.com/vb/index.php?styleid=17 directly via an emulator works fine (and quick) but visiting via wap.viparmenia.com ytakes a long long time to load, but ultimately works OK, however it is still a redirect.
You should double check all your settings for this addon and also for your wap.viparmenia.com sub domain to make sure it is not a redirect, but is parked on teh same root as the primary domain.