My attempts to send messages are being blocked by geo-permissions, with error 21408.
I can access the geo-permissions panel, but I am not able to make any changes. By default, there are no countries selected, not even the US, where the purchased phone number is from. Options to add countries to the geo-permissions section are greyed out.
Is this due to permissions restrictions on my account? I am operating under a developer sub-account of my client. The console offers no hint of why I am not able to make these changes.