It means you made the wrong choices in their events. Try starting a new game and saving before each choice. If you do something wrong again, you should be able to load. Also, pay attention to the additional information in the phone notes about the event. Sometimes, it says if you need a certain amount of stats to pass or if you need to complete a secondary event. You can also use the “Skip” function in the additional menu at the bottom of the screen or with the “Ctrl” button on your PC to speed up the replay. This will allow you to skip text that you have already seen.
That's weird. I just started a new game myself and went through Ash and Hinata's events. Everything works for me with both the slave route for Ash and the love route. Check the phone again. Maybe there are more events for Ash, or the Slave level is less than the Love level for Hinata, which would mean switching to a different route.