cant schedule end date

Hello not sure what's going on but for some reason I can no longer schedule an end date for schedule it used to give me an option to do input an end event and it would show pve enabling in (Time) but the option to change the day is missing see photo. thank you.

Click on Enable Weekly Schedule and you can select date and change it,, 

So on weekly schedule you wont get a end date its the same day.

You cant do Sunday to Wednesday 
But you can do Sunday then choose pvp time and then Monday simultaneously after