OK, so you have the function key set up to join (I assume) that queue, but do you actually have the BLF set up to monitor the hint? I’m not seeing that in your description, even though it’s clear that’s where you’re going because you have the hints listed.
The fact that there are no watchers on any of the queue related hints also makes me wonder if the connection to the hint is complete.
Didn’t I see something about that being removed in Asterisk 13 a little while ago (like 4 messages back). I could be misremembering of course.