If you are having trouble starting a round with your Arccos Caddie Link, it could be for the following reasons: 

1. You have more than 16 clubs actively paired. The Arccos Gen 1 Link can only store a maximum of 16 paired clubs. The Gen 2 Link can store up to 30 paired clubs. 
2. You have a Gen-1 sensor actively paired. 
3. Your Arccos Caddie Link did not receive a GPS lock prior to starting your round. Please make sure you give Arccos Caddie Link enough time to acquire a strong GPS signal by turning your Arccos Caddie Link on at least 5 minutes prior to your round. In order to receive a strong GPS signal, please make sure the Arccos Caddie Link has a clear view of the sky. 

If you continue to have difficulty with your Arccos Link, please contact Starter@arccosgolf.com or Submit a Request and share what troubleshooting has been attempted.