Good to hear form you again. Thanks for the link to your sample page.
You wrote “I cannot get all the thumbnails to load.” Actually, the thumbnails are loading just fine. After that, it appears that the “missing” thumbnails are re-sized to a height of just 4 pixels, which is displayed as the slim grey bars above the captions. If you look at the HTML you will see ?resize=116%2C150" data-recalc-dims="1"
appended to the file name. This looks like some sort of theme or plugin feature not part of MLA. You will have to find the source and purpose of this code and investigate further; I can’t help you with that.
You wrote “I cannot figure out how to show “list by title” instead of thumbnails.“. Try adding size=none
to your shortcode parameters , which will “Suppress thumbnail display and substitute the title of the item.” If that’s not working, let me know and I will investigate further.
I am marking this topic resolved, but please update it if you have problems or further questions regarding the above suggestions. Thanks for your continued interest in the plugin.