In reply to Justin Tadlock.

Actually just following your link: https://wordpress.org/themes/mayland-blocks/ and then click on the "Preview" button. The left sidebar of the screen displays, but that is it. Not sure why this has anything to do with the plugin since I am just "viewing" in the browser and not logging into anything. Obvious not your issue. I did try on PC laptop, iPhone, and iPad all with the same result.

I guess the good news is that I found your post via a Google Alert I have setup. ;-)