I play on PC. On the bottom right of the client near where it shows the Mastery Progression for the season there has been a reward for entering 3 Quick drafts. I have since done several quick drafts and have played well over 3 matches but nothing seems to trigger this.

I also see that others have had this same issue. I have also not seen any follow up to these. One post by Karlpybara#93312 showed over 5 pages of comments. Please advise!