You may find more information in the Sports & Fitness Forums - Sports & Fitness. If your Vivoactive watch is fully updated for the software, you can contact the manufacturer of your trainer and see if they have other reports or any suggestions. They might have an update for your trainer. Your Vivoactive series watch is only using ANT+ for connectivity. In general, compatible issues and connection issues are almost always on the trainer side since your watch is fairly passive and using ANT+ for connection.
