No issues were found from a basic inspection of the code. There may be impacts on site caching, and load as additional requests are added.
Reason for the 'Use with caution' result
The plugin has been given this recommendation at the tester's discretion:
As the plugin intersects with site requests and modifies caching behaviour when performing, it should be tested for any compatibility issues with the specific server infrastructure and site setup in place.
The user should be aware that as of the inspection date, there are support issues unanswered at https://wordpress.org/support/plugin/missed-scheduled-posts-publisher/