With only 4 posts to your credit so far, why don't you make some more replies here or elsewhere and get your count over 10. Then wait at least a day and see if that button shows.
OR ...
Something that has only worked for me once, but is often told to others........ clear your browsers cache. Close it, then reopen it.
When it worked for me, it was for several forum buttons not showing up that others swore were there. Another site though with different forum software. Long, long ago.