Everytime I try to access to sajha, it shows
"You are currenting having some issues with sajha.com. Please try later"
(Dont see me wrong it is "currenting".

I even wrote email to San dai, but no replies yet.
Is this my computer problem or Sajha admin blocked? (I dont think I did anything wrong except if someone hacked my username/password).
Or may be my office blocked it????

It's been a week and I am using mobile site.

That is a good news, you can spend good time somewhere else.

clear your cache/cookies/everything..
try to log in and see what it says..