I have the following issue with LMIC on my RPi3:
pi@rpi3:~/arduino-lmic/examples/raspi/ttn-otaa $ sudo ./ttn*
ttn-otaa Starting
RFM95 device configuration
CS=GPIO8 RST=GPIO22 LED=GPIO23 DIO0=Unused DIO1=Unused DIO2=Unused
DevEUI : B8xxxxxxxxxxxxxxxx
AppEUI : 70B3D5xxxxxxxxxxx
AppKey : Fxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
RXMODE_RSSI
14:21:41: 606: engineUpdate, opmode=0x8
Packet queued
14:21:41: EV_JOINING
614: engineUpdate, opmode=0xc
411793: engineUpdate, opmode=0xc
411856: TXMODE, freq=868100000, len=23, SF=7, BW=125, CR=4/5, IH=0
728365: RXMODE_SINGLE, freq=868100000, SF=7, BW=125, CR=4/5, IH=0
793841: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
804257: engineUpdate, opmode=0xc
4523130: engineUpdate, opmode=0xc
4523187: TXMODE, freq=868300000, len=23, SF=7, BW=125, CR=4/5, IH=0
4839701: RXMODE_SINGLE, freq=868300000, SF=7, BW=125, CR=4/5, IH=0
4905177: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
4915592: engineUpdate, opmode=0xc
9366812: engineUpdate, opmode=0xc
9366868: TXMODE, freq=868500000, len=23, SF=8, BW=125, CR=4/5, IH=0
9686656: RXMODE_SINGLE, freq=868500000, SF=8, BW=125, CR=4/5, IH=0
9752036: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
9762451: engineUpdate, opmode=0xc
16799609: engineUpdate, opmode=0xc
16799665: TXMODE, freq=868100000, len=23, SF=8, BW=125, CR=4/5, IH=0
17119450: RXMODE_SINGLE, freq=868100000, SF=8, BW=125, CR=4/5, IH=0
17184830: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
17195250: engineUpdate, opmode=0xc
24465252: engineUpdate, opmode=0xc
24465342: TXMODE, freq=868300000, len=23, SF=9, BW=125, CR=4/5, IH=0
24791158: RXMODE_SINGLE, freq=868300000, SF=9, BW=125, CR=4/5, IH=0
24856346: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
24866796: engineUpdate, opmode=0xc
37921119: engineUpdate, opmode=0xc
37921220: TXMODE, freq=868500000, len=23, SF=9, BW=125, CR=4/5, IH=0
38247020: RXMODE_SINGLE, freq=868500000, SF=9, BW=125, CR=4/5, IH=0
38312208: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
38322631: engineUpdate, opmode=0xc
52958651: engineUpdate, opmode=0xc
52958746: TXMODE, freq=868100000, len=23, SF=10, BW=125, CR=4/5, IH=0
53295229: RXMODE_SINGLE, freq=868100000, SF=10, BW=125, CR=4/5, IH=0
53360033: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
53370481: engineUpdate, opmode=0xc
79742695: engineUpdate, opmode=0xc
79742784: TXMODE, freq=868300000, len=23, SF=10, BW=125, CR=4/5, IH=0
80079247: RXMODE_SINGLE, freq=868300000, SF=10, BW=125, CR=4/5, IH=0
80144051: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
80154480: engineUpdate, opmode=0xc
104734138: engineUpdate, opmode=0xc
104734201: TXMODE, freq=868500000, len=23, SF=11, BW=125, CR=4/5, IH=0
105099740: RXMODE_SINGLE, freq=868500000, SF=11, BW=125, CR=4/5, IH=0
105163776: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
105174191: engineUpdate, opmode=0xc
157643148: engineUpdate, opmode=0xc
157643206: TXMODE, freq=868100000, len=23, SF=11, BW=125, CR=4/5, IH=0
158008747: RXMODE_SINGLE, freq=868100000, SF=11, BW=125, CR=4/5, IH=0
158072783: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
158083201: engineUpdate, opmode=0xc
216662614: engineUpdate, opmode=0xc
216662672: TXMODE, freq=868300000, len=23, SF=12, BW=125, CR=4/5, IH=0
217070939: RXMODE_SINGLE, freq=868300000, SF=12, BW=125, CR=4/5, IH=0
217133439: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
217143858: engineUpdate, opmode=0xc
323541538: engineUpdate, opmode=0xc
323541596: TXMODE, freq=868500000, len=23, SF=12, BW=125, CR=4/5, IH=0
323949866: RXMODE_SINGLE, freq=868500000, SF=12, BW=125, CR=4/5, IH=0
324012366: RXMODE_SINGLE, freq=869525000, SF=12, BW=125, CR=4/5, IH=0
15:48:06: EV_JOIN_FAILED
I have checked the keys many time over and over again. Anything else I should be looking at please?