Bluetooth issue

I have had my Garmin 945 for 1-1/2 and had no issues with blue tooth connectivity to my iphone during that time. But A few days ago I started having issue where my garmin will not stay connected to  my phone. I have tried multiple times to remove the device, i have uninstalled and reinstalled the connect app and nothing fixes the issue. I have no problem using bluetooth with my iPhone and other accessories so it is something wrong with my garmin. Any  other ideas on how to fix this issue? I sent a message to customer service and still received no reply. I have tried turning blue tooth off/ on and restarted both  devices but nothing fixes the issue.  It will randomly connect sometimes through the day, but does not stay connected.