Please check if you have experienced the following items:
The APN is set according to the information from your eSIM installation page if required (all lower case and in one word).
You have remaining data on your eSIM: if you try to connect while there is no remaining data, you may encounter this error.
You are connected to the supported network as advised on your eSIM installation page.
In order to find the eSIM installation page and all the details, please go to your Pilot account > TAP the menu icon (☰ or ⋮) > Your Purchases > Your eSIM > View Installation instructions.
In this case, please reset your network settings. If the above steps do not help, please try resetting your network settings*:
Go to Settings on your device
Go to General
Go to Reset
Go to Reset Network Settings
Restart your device
*Resetting network settings reset existing WiFi networks and passwords, cellular settings, and VPN and APN settings.
If the issue persists, please contact us for further assistance. If you have any questions, please feel free to contact support.