The patent registration was unsuccessful.

1, clearly tell you that the drop-down menu is available, I just tried it (see attached figure); QQ, Maxthon and IE are all acceptable.

Yes, it is useless to send materials to temporary users without online registration. Because the approval is an electronic user account. But you can also register by email (as long as the patent office can register a temporary account before receiving the letter, but this is not recommended)