Why does the 'ON' light stay red/orange?

This is most probably due to expiration of the firmware.

Please download the newest firmware from https://flarm.com/support/firmware-updates/ (look for Aurora).

Connect to the device via Wi-Fi: How do I connect to Aurora via Wi-Fi?

The downloaded file can be uploaded under 'Maintenance'->'Firmware Update'. Please note that there are two firmware files. The one that expires is the 'Aurora Firmware', which is a file that ends with '.fw'. The other is the Hub firmware, which contains the Wi-Fi firmware, including the website and RemoteID functionality.