Alex and Val

Many will appreciate this information.  Thanks for your thoughtfulness in posting it.

My apologies. There's no question. I just wanted to post this in case someone else was looking for this information. 

Sorry to keep posting, but I'm just going to update this thread in case someone comes across it later and finds it useful.
 
I got my biometrics and interview appointments for Sept. 18-19.
 
What I was doing wrong originally was putting "Sept 4" -- the first date of availability -- in the embassy interview box. Because that date was so early, there were no biometrics appointments available.
 
 
When I changed the interview date to the third week of September, that's when a bunch of biometrics appointments became available in the second box.
 
This may be self-evident, but it was confusing for me, so I leave that here in case someone else was having a similar issue.