Behavior shield is now off

The behavior shield keeps turning off and I keep turning it on again but it just keeps going off.
I have tried to repair avast but the issue is still happening.
Umm What do I do? Is this happening to others too? Please help

  • Which Avast…? (Free/Pro/IS/Premier)
  • Which version…?
  • OS…? (32/64 Bit…? - which SP/Build…?)
  • Other security related software installed…?
  • Which AV(s) did you use before Avast…?