Problem with iDirect 3000 Series

If your provider says you should be using "horizontal" receive downlink polarisation then...

Set the receive polarisation to the horizontal starting position.  The broad faces of the LNB input waveguide will be at either side, like so:

Now adjust the polarisation angle.  While facing towards the satellite rotate the feed clockwise if the require angle is positive.  Anticlockwise if negative.  

Get the polarisation adjustment angle from https://www.satsig.net/ssazelm.htm or https://www.satsig.net/maps/lat-long-finder.htm

If you are near the equator you may have to rotate the feed by a large adjustment angle, perhaps 80 deg or so.  This explains why you got a better signal, but accuracy is important - you will receive interference from signals on the other polarisation and you will interfere with other peoples' service.

Horizontal means parallel with the equator, not the ground where you are.

Best regards, Eric.