Hi,
Using a RUT240 router with latest firmware, an SMS with content "adminpassword status" does not return any status SMS. The SMS is received by RUT240 (according to the web interface -> "SMS Management" section).
Note: a command like "adminpassword reboot" does have the effect of rebooting the device, but no status SMS is received after the reboot (as advertised by the documentation).
Also note that if I send an SMS to my phone from RUT240's web interface, this SMS is received by my phone (and I see it in my Machine2Machine provider's web interface).
Best regards!