Unable to pair S70 with Iphone

Hi , i have S70 for quite sometime. One fine day, the watch somehow unable to pair with my iphone. Kept getting the "We're having problems talking to the Garmin Connect server. Try again"

I have done multiple things as below:

- Restart Phone

- Restart Watch

- Reset Data on Watch and Phone

- Uninstall GGA , log out and log in again , remove S70 device from my account , remove S70 from bluetooth settings on my phone

- Tried to use another iphone to pair

- Connect watch to Garmin Express and updated everything

What should i do now? Should i just bring to the service centre? I am not sure if updating it to the latest software made it this way.