This is really weird.
Either I suffered some kind of brain warp or else I was dreaming, lol. I thought I received a post from someone saying to try posting and there should be something under Post Icons like Additional options or something. I tried and didn't see anything like that so I posted a reply saying that and when I looked at the post there was my signaturel, it showed up automatically. But (this is the weird part) now I can't even find those posts.
Oh well, that's the kind of day it's been. Anyway I'll post this and see what happens. Thanks very much for your replies.