In Friday’s lawsuit against DraftKings, plaintiffs Shane Harris of New Bedford and Melissa Scanlon of Woburn said they opened accounts with the online betting company earlier this year, after Massachusetts legalized betting, expecting to benefit from a promotion touting a “$1,000 bonus” reward for signing up. Since then, he’s counseled others and came to Northeastern about three years ago to work on policy solutions. A decade ago, while working as an attorney, Levant stole $2 million from his family and clients to fuel a compulsive gambling addiction. Gambling addiction first got Daynard’s attention when Harry Levant, a gambling addiction counselor from Philadelphia, started studying the issue at Northeastern’s Public Health Advocacy Institute.