No Sound (yes, again)

[trawlings]

OK. Mac Mini, i7, 64 GB Ram, OS 10.15.7, PT 2021.3.1. I've used Logic for everything until recently. Have the need to start using Pro Tools. Downloaded, chose the Hardware (Presonus 32S console) and Playback Engine (same). Meters show there is something there, but no sound from the hardware. Logic Pro still has sound, so I'm sure it's something in the software. All of my searches tell me the same thing: Setup>Playback Engine will solve the problem. It doesn't. I changed the Playback Engine to Pro Tools Aggregate IO and had sound from my Mac speakers. Changed it back to the Presonus console and nothing. It may be something in the IO assignments. I'm not sure. Since I'm not at all familiar with Pro Tools I don't even know where to start to troubleshoot more.