Need help with new hub

Trying to setup smartthings for my mother in law. The new app is.not finding the hub. I hit scan but it comes up no device found. Tje light is.blinking blue & green but nothing. Guys I need help please & samsung way to go…love how it’s working out of the box.

Ok got it. Book tells u to scan for device but u need to select the 2018 hub…not scan
. P