You have added me user but as editor only so I cant access any other main features in dashboard. And also please don’t send username and password in forum. For this you can send in email. [email protected].
1. This page not found is showing as you have to select blog page as post page. You can do if from Dashboard > setting > reading.
2. For Custom Links there is option in menu Dashboard > appreance > Menu then add custom link and link it to any page you like and add in menu.
3. Removed the date part of blog as you said.
If you have further questions please contact us.