l ran into another glitch but found a circumvention. When I opened this article on substack by clicking on its title in the email, any attempt to see more than the two or three comments resulted in a PAGE NOT FOUND error. The circumvention is to open your top page boriquagato.substack.com then select this article. After that, commenting and viewing comments works as expected.

This may be the result of my email's article url implying that it is linking to a draft. I dunno if this is normal or not.