Hi,
If you have a issue with your device and Garmin Connect, CALL THE SUPPORT !
DON'T HESITATE !
I called the support yesterday so you MUST call it too in order to raise the complains number.
To call the support go to this page :
https://support.garmin.com
Then choose your device.
Choose "chat" as support, in France they answered me in 2 minutes.
Describe briefly your problem. Then the chatter will give you a mail adress to send log from Garmin Connect.
Go to Garmin Connect, hamburger menu then parameters then "Device diagnostic" (or something like that) click on the "share" logo on the top, choose your mailer and fill the mail adress with the one given by your chatter, the log should be join automatically.
Do the same with the log in "Device synchronisation log" (or something like that).
Engineers will studies this log to find and fix the issue.
DO IT MASSIVELY TO FIX OUR ISSUES