Why can't my QQ say other people's comments?

You should have permission to set, and others can't comment. If you want to cancel the permission setting, you can follow the following steps.

First, open your space home page. The upper right corner is as small as the first gear. When you put the mouse on it, a menu bar will appear. Click Permission Settings, then click Anti-Harassment in the left menu bar, and then click everyone.

I hope I can help you. Thank you, hope to adopt.