trying to load the audible app on my iphone12

Hi. I've been at this for a few hours now and I am looking for outside help. I know how to install an app to My Apple Watch if the app is in the list on the watch. My problem is I can't get the audible app to show up in the list of available apps on the watch. I think it did in the past, but not now. Dozens of other apps appear in the list...but not audible. Here's what I get on my iPhone when I try to sync from the audible app to the watch. I want to listen to audible books while I run without my phone on my person. I can listen to music....just not audible. I have deleted audible from my iPhone and reinstalled. I have completely erased my watch and reset the environment. What should I do to get audible on the list of available apps on the watch, thanks!