If channels don't scan in there may not be something there your receiver can recognize, FEC is very high (need more Q), or maybe the signals are scrambled (if you are searching for only FTA). A Quality of 60% is not really that great for DVB-S or especially DVB-S2 signals. If you can get that Q percentage up, try to re-scan.
Which particular sat/TP are you having trouble with?
-C.