I explained I was 72 lady on my own and I was promised that I would only speak to one person and it would be an easy process. That didn’t happen, I found the whole thing stressful and frustrating. I didn’t know I had to purchase a lead to plug in as I thought it was part of the package. I was unsure what to order and as opposed to a talk through I was just sent a web link!!! The engineer who installed the unit was the one that gave the most help. He explained things in a way I could understand, and made sure I understood and checked I had the right lead before leaving .