Restore missing main menu I have managed to hide/lose the main menu bar - drupal 7.x.

overview of work I was doing:


I added mediaelements.js
I began adding videos to the site with add content 
I attempted to make a Videos menu in the main menu


It was during some point of this process that I noticed the main menu bar was missing.
I have searched SE for solutions similar to  mine and have not had success with what was presented as solutions (having main menu in block and appearance settings toggled).
I have, so far, tried to go through each setting and compared them against settings in dev environment. 
Are their other troubleshooting tasks I should follow which may point to a resolution?

thank you
resolved - I had restricted the main menu block to specific content types. Removing the restriction restored main menu block across all content types.