It is essential that Data Roaming is enabled in order to use the eSIM. You can on and off your Data Roaming in your settings. Turning on your Data Roaming will allow any eSIM to work with your device.
Turning Data Roaming On
1. Go into Settings and tap on Mobile Network.
2. Click Data eSIM.
3. Make sure this is enabled in order for the eSIM to work. If the toggle is white as shown below, be sure to click it so it turns blue.
4. Tapping it will bring up a confirmation screen. Tap Turn On.
5. If the toggle is blue as shown below, then Data Roaming is enabled.