i took a message 2-3 days ago that joining a ranked match will give us 500 free ranked point but i didnt receive. played nearly 10 matches. I know the weekend passed but it was interesting to get that message. i couldnt play in that time because of my exams but my friend also didnt play in that time but he received 500 ranked points yesterday.
Here related topic in dirty bomb subreddit : https://www.reddit.com/r/Dirtybomb/comments/6570im/bug_didnt_receive_bonus_rank_points/
Hello @pieta9
The message popping up such a short time ago must be an error. That free giveaway lasted two weeks on the release of Ranked Season 2. Sorry for getting your hopes up, but another extra tid-bit. It wasn’t for playing a match, but just for logging in! 
Let me know if there’s anything I can help you with, and welcome to DB.
(Hey guys, do I sound like a bot? <3)
This was a bug. For some reason the pop-up was still showing after the event ended. Apologies for the confusion.