Join Request Accepted on Gateway, but not Node

[volnix]

I'm attempting to join an HTCC-AB01 Cubecell node to a private gateway. I've successfully joined a Heltec esp32 to this gateway.

With the CubeCell device I'm unable to successfully join (according to the node) and send an uplink packet. Below is the output from serial:

Copyright @2019-2020 Heltec Automation.All rights reserved.

AT Rev 1.3
+AutoLPM=1

+LORAWAN=1

+KeepNet=0
+OTAA=1
+Class=A
+ADR=1
+IsTxConfirmed=0
+AppPort=2
+DutyCycle=15000
+ConfirmedNbTrials=4
+ChMask=0000000000000000000000FF
+DevEui=695E38A9E008EFA4(For OTAA Mode)
+AppEui=0101010101010101(For OTAA Mode)
+AppKey=[redacted](For OTAA Mode)
+NwkSKey=15B1D0EFA463DFBE3D11181E1EC7DA85(For ABP Mode)
+AppSKey=D72C78758CDCCABF55EE4A778D16EF67(For ABP Mode)
+DevAddr=007E6AE1(For ABP Mode)

LoRaWAN US915 Class A start!

joining...join failed, join again at 30s later
join failed, join again at 30s later

On my gateway I see successful joins:

In AWS IoT Core, I see successful joins too:

Why am I seeing successful joins on the gateway and LNS, but not the device?