Are family members under the same adress as me able to join luckyscout?

I would ask Vahid and his team; however, I believe it goes by the computer IP address, and more than likely, other family members in your same household would share the same IP address, unless they used their computers or cellphones on public wifi, like from the local library.

Again, I would ask Vahid and his team, but most computer IP addresses are shared by an entire household from my experience.