当天开通建行的网上银行,能马上就能用吗?

当天开通建行的网上银行,能马上就能用吗?
现在我不能用....
进入后就变成这样了
没法下证书....

Error 500--Internal Server Error
From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:
10.5.1 500 Internal Server Error
The server encountered an unexpected condition which prevented it from fulfilling the request.