On another note, install it on mobile or a tablet, so long as you're not using steam account, you can log on there to at least claim your calendar items. Do note, if it works there on your home wifi, then it'll have the benefit of proving it's your computer. If it happens on mobile too, when on same wifi, then it's your connection setup or ISP issue. Either of those is not under Otter ability to fix since the rest of us have no issue. If it's their issue, we'd all have issues.
I really dont know where the problem is, one day game works, another dont.... i tried download on the tablet but after i chose character to play, game crash and thats repeat again and again... i no had this problem before server was hacked