Dont work on 3.1 OS!!

I have a 3GS 32GB and recently bought this product but is not working on 3.1 OS or 3.0! Phone asks for a confirmation to dial number. Sorry but my baby will confirm to dial or what???!!! Arent you shame to sell product that is even not working ??!!!

Nuestra about BabyPhone Deluxe (Baby Monitor)