Answering my own question after a few weeks of troubleshooting:
I could never get my Suunto to connect to the power meter, so I ended up getting the Hammerhead Karoo 2 which uploads workouts to Suunto with the watt information.
It’s not perfect, because now I have two workouts each time- one from my watch (which measures heart rate), and one from the Karoo (which measures wattage). I could probably combine them if I just got a separate heart monitor, but I wish that Suunto just supported Ant+ in the first place.
