Close to the same thing happened to me. I didn't have the aux switches in my truck when I first got it. I got a panel with the same controls only with the aux switches added. Put in the aux wiring. Did the AlfaOBD. Got the commercial controls in the instrument cluster. The problem I started having was the aux 3, 4, and 5 buttons wouldn't work. 1 and 2 just fine. Checked everything. I was told when you do a switch, make sure you unplug the battery and wait about 10 mins before replacing any electronics.
Got another switch control with the aux off of eBay. Did the battery unplug. Put in the new switches. And that fixed everything.
I was also told that these switches are a hit and miss. Some may work fine. Some my half work. and some my not work at all.
My suggesting to you is put in the old switches and see if they work again. If they do, find and buy another switch control panel.