AT&T replaced my failing HR24 500 receiver, but can't get a signal with the new one

Just received my HR24 500 replacement and connected it. There are two Satellite In ports on the back labeled: 1(SWM2) * Satellite In * 2

I forgot to take note when I disconnected the original receiver, and so can't remember which Satellite In port I need to connect to. I believe it is the first one labeled 1(SWM2) since I only have one cable coming in from the satellite. Anyhow, I've tried both, and yet I still can't get the receiver to pull a signal or lock on. It says "Cannot Detect SWM". I powered cycle the unit each time I tried it in a different Satellite In port.

The power inserter (SWM ODU Only SWM) is still connected and plugged in with power as well as my 8-Way splitter (SWS8WB-WMC). My dish is a SlimLine with a SWM LNB (SL3SPIG-P). Noting has changed, I just swapped out receivers, so what am I missing or doing wrong.  The only issue with my old receiver was the hard-drive finally failed if that helps.

I can't remember if I need to change the Dish Type, Switch Type, and/or Tuners or do they set themselves by detecting the LNB and coax connection? I've tried Single and Dual for the Tuners, SWM and MultiSwitch for SwitchType, and SL3 and SL5 for Dish Type, as I know 18" and 18x20 Triple are not valid for my setup.