I use Casper and don’t see ‘sign up for more like this’ either.
When comments are enabled it shows the ‘Become a member to start commenting’ which would be the same as ‘signing up for more’ because it adds people to your mailing list right?
If you are already logged in, you won’t see ‘Become a member to start commenting’, but being logged in means your email is already in the mailing list right?
Maybe it’s only supposed to show one or the other, but I’m not sure.
I wonder if it makes sense to have this subscribe CTA somewhere else, perhaps globally like the footer so it is independent of comments. (Headline and Ghost.org have this)
Every potential subscriber has their reasons for signing up, unless comments is a main benefit for the reader, it might not convert as well. Just my theory, would be worth testing!
The subscribe CTA is already in the top right corner of the header, and the floating icon in the bottom right corner.
I disabled the floating icon on my site, but I put a link in the footer navigation for the subscribe modal popup. You can do this under settings - navigation.