No, all updates (including the full version) are included in the early access - Steam and the itch.io client will automatically download the update, otherwise you'll have to download the update manually and extract the zip file.
That's usually an anti-virus trying to protect you from downloading executable files from the internet. You'll have to figure out how to allow it based on your antivirus, or use Steam (which, as long as that installs, can install games from the inte…
Weird, I used the numpad in the username field, and it wrote characters a-i instead of 1-9. Probably because it's not a real text field like the exe one, I just use the keyboard event's charcode value, which is incorrect.
Make sure the password is correct. Also, some people were having trouble getting the text input to do special characters (but they work for me - try it in the username box to see if it works).
I just tried typing an _ in both the windows and html5 version, and it works fine. It won't let you login until you activate the account though (it will say bad username and password). The accounts never expire, but I can delete it if you want to ch…
The last patch was released in 2014 (v1.1.5) - back then, Deity Quest was still in Steam Greenlight (and had been stuck in there a while). The steam version was released when it got through steam in 2015, but the version is essentially the same as t…