I see this catch people out again and again.
When you first plug in your shiny new MS switch it can take an hour for them to complete all the software upgrades before they will work. They will often sit there with an orange light. Often people keep power cycling them thinking something is wrong - which often just makes the process take even longer.
So tip of the month - after claiming your switches in the dashboard plug in the switches before the day you need them and just leave them sitting there. Don't stack them. Don't do anything else. Don't even watch them. If you sit there watching them your human nature will take over and you will think something is wrong and try and intervene slowing the process.