@sofy yes, it's working. Thank you so much! BTW: I didn't receive the email notification when you replied my topic. As I remember, there should ...

no permission page  Screen-Shot-2019-12-11-at-12.20.46-AM.png

@sofy Ok, I got this work, but there're some problem. When I was a guest, I try to access The page redirect me to the login page, but when I lo...

@sofy Thanks, now the delete button is there. 😀 

attached for your reference.  Screen-Shot-2019-11-02-at-7.26.54-PM.png

attached for your reference, how can I delete the useless file from attachment list?  Screen-Shot-2019-11-02-at-10.00.59-AM.png

@sofy yep，but i can't delete the attached file，it's just remove it from post

I mean how to delete attachments