How is the end-device joined to the Conduit? OTAA or ABP
Does this key match the end-device Network Session Key?
68.44.bf.f1.51.c9.f5.0c.bd.5f.1f.d8.31.90.0f.8c
Apparently there is a record of DevAddr 01:0f:1e:4f associated with DevEUI 01-23-a3-0b-00-1e-a5-a0 on Conduit.
Have you upgraded to AEP 1.4.16, the session information is available through the GUI. Keys and counter values. Check that the settings are matching the end-device.