Bluetooth connection issues – Garmin Smartphone Link Review

I have a Garmin Driveassist 51, the first time I use it, it connected to the smartphone link app, after 2 day I lost the Bluetooth connection between the app and the phone, trying to reconnect many times but failed, only the phone connected to the GPS but not the app. Garmin please fix this issue.
Review by Bie lie on Garmin Smartphone Link.