The Arosa-Parking website says there are 9 charging stations in this parking, but I am not able to find information about the 6 mysterious additional charging stations.
On Evpass and now Shell Recharge there are 3 stations, 2AC+1DC. The 2 AC chargers are the only ones pictured on their photo of the parking. No other charger appears as roaming in any of the apps I checked.
An archived version of the page from September says "Zurzeit 3 Ladestationen" so there must be an expansion in progress.