Even tough you entered the telegram on May 3th, you still have good chances to enter the lottery. The date you joined telegram is only responsible for 30% of yout total score. You can get up to 50 more points by answering the questions of the quiz, and another 20 points by contributing to the community (for example helping people on telegram, writing helpful articles about the technology of Quarkchain, or making youtube videos).
Even if we can get over 60 points it's not a guarantee of being whitelisted, since it's a lottery.
So good luck for us all :)