I want to add a notice for the upcoming PAFOA group shoot on the 21st into my sig line.

I realize that sig line space is dependent on your "membership level" and that my Silver support membership has expired, but even the most basic of us pee-on members are supposed to get "one line" for a sig line.
I tried it with a link and with bold text. Didn't work.
I assumed either the bolding of text or the link, or both may be the issue, so I removed both and left the text plain.
Still nothing.

I'm going to renew my membership, but I don't have the money until I start working in a few weeks.

When I hit "preview signature", it DOES show me the sig line without any errors such as exceeding character limit.
It just doesn't display in my posts.