SyncBac PRO for GoPro HERO6 requires the camera to be running v01.60 onwards. Please ensure you update your camera software to the most recent version. You can find this here.
Why isn't my GoPro HERO6 receiving timecode?
Why can't I power on/off my GoPro HERO6 when using the BLINK Hub app?
For the initial release version of SyncBac PRO for GoPro HERO6 the remote power on and power off camera control function has been disabled on the BLINK Hub app due to GoPro HERO6 firmware currently not supporting this feature.
This will be fixed in the camera’s next firmware update and we will then enable this feature on BLINK Hub. Other control functions including start/stop record and updating camera settings will be available in the launch release.