Garmin Coach won't sync for benchmark run.

The watch just says "Set up a Garmin Coach training plan using Garmin Connect Mobile."

I have tried connecting via cable to Garmin Express & syncing there.

I have tried uninstalling Garmin Connect from my phone, forgetting the bluetooth connection, rebooting & setting up the watch as if it is new. 

The watch still just says "Set up a Garmin Coach training plan using Garmin Connect Mobile." I was very much looking forward to going for a benchmark run tonight, any advice?