We are still discussing the details of the new registration process. We have many aspects to consider and review, participation and interaction on this forum being one of those.
We will make an announcement when we are ready to reopen registration. (Which, to clarify, was last at Level 4, not Level 5.) Until then, we are hoping that both members and non-members are enjoying the bonus challenges we are providing.
Edit: We are locking the thread, as we have answered this question as fully as possible at this time. Any new information will be released via an official announcement.
We wish to clarify that your question was not unwelcome, nor was our locking the thread any kind of disapproval of your question. We encourage you to ask any questions you may have. We simply decided to lock it because we have been asked this so many times that we will be adding it to the forum FAQ and wanted to prevent any further questions from anyone on the new process. As we said, when we have information to release, we will release it. We promise.