If you have a tag that does not match the number it says on the leaderboard you can do a tag number update yourself. Click on submit updates. From there you can either submit match scores or click on the tab next to that which says update player tags. When you update your tag you can back date it to when you actually got the tag. Whoever was going to submit the scores from the M3PO never did, so this is an easy way to at least fix your own tag.