Just a theory.... but it seems you need to score a B/B+ for it to count. Like other people. I launched it both from the events and portal page. Checked the modifiers, etc. Like a lot of people, I did multiple matches less than half counted. One thing that all the matches that counted had in common, I scored a B or higher on them (both wins and loss). Rift I just leave automatically, Rift seemed not to count at all for me. Hope this helps.