Ok i made a mistake when I read Joe users instructions. I did exactly as he suggested added a oscam.services file and then added a reader as he showed. Afn came in and worked, then I went to another pvu channel, it worked, then shifting back to afn no go and this log
ERROR: ioctl(CA_SET_DESCR_MODE): Invalid argument
2018/10/18 11:24:47 42095304 c (ecm) linuxsatsupport (0E00@000000/0000/0068/99:B75E3562FB2835C68DE4A091A8A3CD99): cache3 (8 ms) by AFN (C/1/2/2) - AFN
2018/10/18 11:24:47 42095304 c (dvbapi) Demuxer 0 found 2 ECMpids and 6 STREAMpids in PMT
2018/10/18 11:24:47 42095304 c (dvbapi) ERROR: ioctl(CA_SET_DESCR_MODE): Invalid argument
2018/10/18 11:24:47 42095304 c (ecm) linuxsatsupport (0E00@000000/0000/0068/99:5E3C1E409DC52AA035D32ECF70BD191F): cache3 (11 ms) by AFN (C/1/2/2) - AFN
2018/10/18 11:24:49 42095304 c (dvbapi) Demuxer 0 stop descrambling program number 0068 (AFN)
2018/10/18 11:24:49 42095304 c (dvbapi) Demuxer 0 ecmpid 0 CAID: 5604 ECM_PID: 0BEC PROVID: 000000
2018/10/18 11:24:49 42095304 c (dvbapi) Demuxer 0 ecmpid 1 CAID: 0E00 ECM_PID: 17A4 PROVID: 000000
2018/10/18 11:24:49 42095304 c (dvbapi) Demuxer 0 found 2 ECMpids and 6 STREAMpids in caPMT
2018/10/18 11:24:49 42095304 c (dvbapi) Demuxer 0 found channel in cache and matching prio -> start descrambling ecmpid 1
2018/10/18 11:24:49 42095304 c (dvbapi) Demuxer 0 trying to descramble PID 1 CAID 0E00 PROVID 000000 ECMPID 17A4 ANY CHID PMTPID 13F3 VPID 0681
2018/10/18 11:24:49 42095304 c (dvbapi) ERROR: ioctl(CA_SET_DESCR_MODE): Invalid argument
2018/10/18 11:24:49 42095304 c (ecm) linuxsatsupport (0E00@000000/0000/006B/99:3498E4946AE7FFC5AEF4FC518BA448E1): cache3 (4 ms) by AFN (C/1/2/2) - AFN
2018/10/18 11:24:49 42095304 c (dvbapi) Demuxer 0 found 2 ECMpids and 6 STREAMpids in PMT
2018/10/18 11:24:49 42095304 c (dvbapi) ERROR: ioctl(CA_SET_DESCR_MODE): Invalid argument
2018/10/18 11:24:49 42095304 c (ecm) linuxsatsupport (0E00@000000/0000/006B/99:92EB0BDC01F31E4B17601109F3F46A11): cache3 (0 ms) by AFN - AFN
2018/10/18 11:24:53 42095304 c (dvbapi) ERROR: ioctl(CA_SET_DESCR_MODE): Invalid argument
2018/10/18 11:24:53 42095304 c (ecm) linuxsatsupport (0E00@000000/0000/006B/99:A07579E3865E187D13EC302EAF497625): cache3 (5 ms) by AFN (C/1/2/2) - AFN
2018/10/18 11:24:58 42095304 c (dvbapi) Demuxer 0 stop descrambling program number 006B (AFN)
2018/10/18 11:24:58 42095304 c (dvbapi) Demuxer 0 ecmpid 0 CAID: 0E00 ECM_PID: 1778 PROVID: 000000
2018/10/18 11:24:58 42095304 c (dvbapi) Demuxer 0 found 1 ECMpids and 4 STREAMpids in caPMT
2018/10/18 11:24:58 42095304 c (dvbapi) Demuxer 0 found channel in cache and matching prio -> start descrambling ecmpid 0
2018/10/18 11:24:58 42095304 c (dvbapi) Demuxer 0 trying to descramble PID 0 CAID 0E00 PROVID 000000 ECMPID 1778 ANY CHID PMTPID 14B7 VPID 0136
2018/10/18 11:25:00 42095304 c (dvbapi) Demuxer 0 found 1 ECMpids and 4 STREAMpids in PMT
any ideas? Dm900 dream elite 6 developer and oscam.