Check the content of the file called "_dev_dvb_adapter2_STB0899_Multistandard" it should contain
"type": "DVB-S"
row. I guess yuo have something else there. Tvheadedit checks this parameter.
See mine:
{
"enabled": 1,
"fe_path": "/dev/dvb/adapter0/frontend0",
"dmx_path": "/dev/dvb/adapter0/demux0",
"dvr_path": "/dev/dvb/adapter0/dvr0",
"type": "DVB-S",
"displayname": "TurboSight TBS 6922 DVBS/S2 frontend",
"autodiscovery": 0,
"idlescan": 1,
"idleclose": 0,
"skip_checksubscr": 0,
"sidtochan": 0,
"qmon": 0,
"poweroff": 0,
"nitoid": 0,
"diseqc_version": 1,
"diseqc_repeats": 0,
"extrapriority": 0,
"skip_initialscan": 0,
"disable_pmt_monitor": 0,
"full_mux_rx": -1,
"grace_period": 0
}