I could never get Hidden Bar to work correctly. I'm sure I'm missing something obvious, but I ran Hidden Bar for months and the hidden icons only became visible

I could never get Hidden Bar to work correctly. I'm sure I'm missing something obvious, but I ran Hidden Bar for months and the hidden icons only became visible left of the notch after clicking > maybe twice, briefly, and I could never figure out what I did differently. iBar immediately worked correctly, but Ice is superior and completely free.