Awh. >~<

Could it possibly be from windows 8.1? I got the update a little while ago, i'm not sure if I was online after downloading. Kinda jut remembered that update..

It's always possible. A lot goes into something like our battle system. Your hardware, your software, your browser, browser addons, our scripts, Cloudflare, and our server. Any one of those could cause an issue (which makes it really hard to debug something if it works for me). It also makes it hard to make something work the same for everyone.

Since I haven't changed anything in the time it went from working to not working, a change had to of been made on your end. But that doesn't necessarily mean it's "your" fault lol.

It's something that probably would be fixed when I revamp the battle system, but that won't be for awhile. Otherwise, you'd have to hope to debug it on your end or hope that w/e broke it will fix it at some point.

Are you sure you didn't accidentally hit the Num Lock, or something like that? I wouldn't be surprised if Windows had some setting where pressing a key multiple times will negate the num lock for one stroke.

I had an issue similar to this except it was with just the letters, and no matter how many times I pressed the "A" key, it wouldn't work. I found out when I went to chat with a friend on FB that somewhere along the line I managed to hit the Caps Lock key; unlocking caps fixed the problem :)