Well, I’m not much of an expert, but if it found your Stages power meter, you’re good to go anyway, because all Zwift looks at, is your power (output), either form a power meter, or from the calculated power curve of a smart trainer… At any rate, I think you cannot use both at the same time - see https://support.zwift.com/hc/en-us/articles/204587825-How-to-Start-Riding-in-Zwift - At this point, you will pair your smart trainer, your speed/cadence sensor, or your power meter. If you have both a power meter and a smart trainer, you will have to pick one or the other for Zwift to read from.