Here's a link with instructions: https://www.familytreenow.com/optout I'm assuming you found some information about yourself that you figured shouldn't be freely available? Have you tried searching any celebrities?
Went to Home Depot yesterday....today email ads...coincidence?...likely I was tracked. When I went to Lowes a few weeks ago same thing....
familytreenow.com doesn't. They just put it out there. But it's mostly name/address/associate/phone number information. Not the arrest record, etc... stuff you see advertised on the pay sites.