Liftmaster 8165

I have a Liftmaster 8165. I followed the work around at Security+ 2.0 Openers (yellow "learn" button) but cannot get it to work. I purchased an 883LM control panel and the light in it flashes, but will not open the door. Can the opener only recognize one wired control panel at a time? I already had an 882LM which came with it which is mounted to the wall.

From what I’m finding online it looks like you can hook up up to 4 buttons. Make sure you program it to work with your opener: