Your inverter is connected to the internet either via a D-Link or a Powerline Adaptor
If no changes were made to your internet (internet provider or password) and the lights on your D-Link or Powerline Adaptor are not green, unplug it from the outlet for 10 seconds before plugging back in. If this does not fix the issue, please utilize the below guides.
To re-connect your system to the internet with a D-Link, please follow the D Link re-Connection Guide
To re-connect your system to the internet with a Powerline Adaptor, please follow the Powerline Adaptor Connection Guide