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When you originally would have obtained this MOTD the competitive season would have still been active, but ending soon. Now that you have logged on, after Nov 16, you have been served the most recent MOTDs including this one. We shared in previous MOTDs, blogs, and tweets, on Nov 2, that the competitive season was ending at a later date which we have now crossed.
And when is everyone able to obtain or claim the rewards they hardly played for?
If you previously played Ranked Play during the Season Five ladders, which we call the Season Five competitive season, and earned rewards by playing, you can obtain those now. This process is similar to how previous seasons operated also.
Your questions lead me to believe that you don't typically play Ranked Play which is okay.