When I visit BX.in.th it showing a message that my IP has been blocked.
Your IP been blocked from some activity which our system does not allow, such as entering user/password wrong many times, spamming the chatbox or making too many connections to our server. We must block certain activity in order to protect our system, please moderate your activities accordingly.
Your IP will be automatically unblocked after usually less than 1 hour depending on the block reason, so you can just wait for the block to expire.
If you want immediate access you can try turning off and on your internet modem to get a new IP address from your ISP.