Thanks so much!
I changed the “Restrict number…” from 0 to 1 and looks like things are working as intended. The email log confirms that an email went out to each public subscriber on my list.
I guess I simply had some confusion as to what the “Restrict number of Recipients” number implied. I thought that 0 (for unlimited?) meant unlimited recipients on a single email….like they were all being BCC’d. But it makes sense that “1” would imply a single email generated for each subscriber.
Thanks for the quick response and clarification to solve my issue!!