There could be different reasons why your eSim is not working. Here are a few:
Device Compatibility: Have you checked that your device is compatible with eSims?
Data Roaming: Please check that the data roaming has been enabled on your device.
Carrier Unlock Status: Is your device carrier unlocked?
Connectivity: Do you have a stable 4G or Wifi connection?
APN Settings: Please check that your device's APN settings are correctly configured.
Geographic Availability: Are you currently located in the country for which this eSIM is designed to operate?
If you need additional assistance or have any questions about these checks, please refer to this FAQs page here