I asked a question yesterday here on Meta SE regarding a possible bug (support), and today I found that the problem was gone. I also found why that possible bug was gone, so I answered my own question to indicate so.
Therefore my question is now solved (still have to wait a day to accept it, and possibly more, in case a more detailed explanation is posted). However, when I tried to edit my question to add the status-completed tag, it indicated that it was only for "moderator use".
Is there a process or way for me to add or suggest that tag to my question now that is solved? Also, Should users be allowed to add status-completed to their own questions?
Note: I read How can a user suggest a status tag edit on meta, but in this case I am not suggesting an edit, as it is my own question.