Drupal 7 - views blocks not displaying page field content
A block created by view shows up as any other view, unless you have permission control for the block at views level or at block level.

Permission at views



Permission at block


Visibility settings - By various ways block visibility can be controlled, ensure you have appropriate configurations for this.





Region Settings - Ensure you are putting the block in the region of right theme you are expecting the block to see.


Few things to debug.


Login with super admin(user id 1) see if you can see the block, if yes it will ensure you have permission issues.