No Hotbird Channels

Hi. My installation can't find more than 90 channels on hotbird. While scanning for new channels, the quality stays at level 0. In other programs (DVBViewer) or on normal TV everything works fine. On Astra 19,2 everything works fine too. Also updated the transponderlist - no progress.

ProgDVB Pro x64 7.26.05
Digital Devices DVB-S2 Tuner
DiSEqC Multiswitch
13.0 Hotbird
19.2 Astra

Any idea? Thanx.