How do I make any one can see the image?
In the ACP there's a setting, try searching for image.
You'd need to modify the theme:
@wuyafang yes if you set the permissions accordingly. Setup guest permissions at category level in ACP.
I still haven't fixed this, I'm on 0.5.4
That circle next to login / register means that connection to nodebb has been lost, sometimes because of a restart, sometimes because of a crash, either ./nodebb logs or running nodebb in developer mode.
Kind of hard for me to test as an administrator lol. I can post regardless of settings. I guess it's time for a low-privilege account.