Don't worry, you aren't the first person to have received less than acceptable customer service from that company. The company is there for the sale, but seem to always disappear when it comes time to provide assistance. BTW.... They are not even close to being the largest satellite TV store, but I guess that on the web everyone is a mega store!
Since your Latitude is 43 degrees, make sure that you have set the motor
Latitude Angle Scale to 43 degrees and not accidently set the motor
Elevation Scale to 43 degrees. This is a common mistake to confuse these to scales on motors.
The Southern most satellite for your region is at 40 degrees elevation directly south. With the motor aimed at the zero position, the dish should appear to be tilted back from vertical by only 14 degrees. This is because your dish is an offset design and it is actually looking at a point in space that is 26 degrees higher than the dish face is pointed at..... It is also important for the dish to be aligned correctly on the motor tube and not be aimed to the left or the right of the correct alignment. Make sure that the dish is facing exactly in line with the motor when the motor is in the default zero (0) position.
Once you set the dish elevation, use USALS motor control in the receiver menu setting and enter your longitude and latitude. Select a satellite that is south of your longitude position (I.E. AMC2 at 79W) and the receiver will automatically calculate and drive the motor to that position. Depending on what LNBF the reseller provided, you will also need to set the LNBF type in receiver menu to match if standard (LO frequency 10750 or Universal LO 9750/10600). Look at "The List" tab at the top of this forum and choose an active transponder from the list and set your receiver to this frequency. Verify that the receiver has the correct polarity (Horizontal or Vertical) set and the correct symbol rate entered for the transponder frequency.
If the receiver and a small TV is beside the dish, slowly rotate the motor on the mast 10 - 15 degrees of either side of magnetically corrected south. If no Signal Quality reading is detected, increase or decrease the dish elevation angle in one degree increments and repeat the slow rotation of the motor on the mast. You may find the satellite Signal Quality reading above or below the suggested dish elevation angle.
The linked motor installation guides should assist with more detail.
Good Luck! We are here to assist!