sorry i post this question again.
I typed https://www.creaders.net by mistake(I add a s after http->https). after that, everytime I type http://www.creaders.net(correct one:http) and hit the Enter ,It automatically change to https://www.creaders.net(https). so I can't go to this website anymore. what is the problem? please help me. than you!
thank you, ppzcgg for your reponse. but i can't still fix it.