@DarkCruz IM having the same issue, It seems there's an issue with Parental controls. 
Setting bedtimes does not stick correctly and the profile will randomly block devices attached to it. Countless people mentioning this on Reddit also and it seems no solutions is being provided. For a paying feature this should be something that should be fix promptly.

 Hello @David-TP ,

What I mean is that for some reason when enabling features within the kids parental profile, they will disable themselves after a minute or so of leaving the parental control menu. Sometimes Devices on that profile will get blocked and the only way to fix it is to either Remove the device or Delete the profile. 
Other times when i try to set an age it would just bug out and say its not able to at this time.

Yes I can reproduce for each Profile. 

Below you can see by the last picture Bedtime is OFF after enabling it then leaving the settings for the profile the "Adjust" Button is no longer there and bedtime is set to off.

Bedtime controls are not working for me either.

I've set bedtime and the child devices are still able to access the internet despite going past 8.30pm cutoff time