I change the font size in my entry, but the text remains too small. What's up?
You need to be aware of the zoom feature in the lower right corner of your MacJournal window. In the lower right corner of your MacJournal window is a little popup menu, that may say something like 50%, click on it to select a different zoom level.
There is also a menu item in the View menu, called "Text Zoom" which will give you similar options.