Find and click on your business app
Click on the Profile Option icon in the top right
Home Screen > App > Profile Options
Click on "Update Contact Info"
Home Screen > App > Profile Options > Update Contact Info
If you are already logged in, this will display your contact info.
Login here or Signup if you do not have a login yet
Home Screen > App > Profile Options > Update Contact Info > Signup
If you do not already have a Login you can Signup
Once notifications are turned on, and you have logged into the App you are active and ready to receive notifications!