When SEObots index your content, they will always ignore the underscore (_) in the filename. This module converts underscore (_) in image filename to hyphen (-), so the image can be properly indexed.
Activate Convert Underscore in Image Filename to Hyphen Module
In the Admin Optimizer page, click to enable the Convert Underscore in Image Filename to Hyphen module. Press Save Changes to save the changes.
No configuration is required for this module to work.