yes i am sure i have tested it several times now also at 6 hour intervals and it deletes the post at least 2 – 3 hours early each time
UPDATE: tested for 12 hours, checked after about 10.5 hours and posts were again deleted too early….
I have the exact same problem, I tried creating the post after installing the plugin and initiating the rule. I am using it to delete posts from a custom post type. Btw thanks for making the only plugin that does this.