[ronangelo]

On line 889 of your theme’s styles.css you have a style that hides the replies

.reply {
    display: none;
}

Just remove it.
Or you could add this code if you have a custom css option.

#bbpress-forums .reply {
    display: block;
}

[ronangelo]

I’m hoping a Preview button could be added next since HTML editor is now the default.