"Your Session Has Expired"

I am trying to connect to Garmin Connect from an app "Healthy 365" via the Fitness Tracker (Current Fitness Tracker on app is Samsung Health). 

However, after keying the details for Garmin Connect for account login and verification code to connect, Garmind Connect would flash "Your Session Has Expired" for less than a second and went back to the login page again. I have tried to uninstall and re-install both Garmin and the Healthy 365 App, but it does not work. 

I have written in to Garmin two times yet have not received any responses since 3 Feb. 

Appreciate if anyone can assist to offer any advice. Thank you.