Call Raymarine
When ever I needed help with my Raymarine equipment I called Ray and always got great help with setting up my equipment and some times just called for
advice or just ask questions and they are great always coming to the rescue.
I find that calling from home is not as good and find calling with a full battery on my cellphone at the boat and they will talk to you step by step with help and will help figure out how to find a problem and help fix it.
Yes some times they are very busy and need to call a few times to get to a person to help.
Nick