What's wrong with qq saying others can't comment? Can I exchange it with my mobile phone?

Qq says you can't comment because you have set the permission to comment. The operation steps of changing the comment permission by using the mobile phone are as follows:

1. Log in to your qq and click Dynamic/Friends Dynamic;

2. Click on your avatar as shown in the figure;

3. Click the Settings icon in the upper right corner of the interface;

4. Click who can comment on my space;

5. Set permissions as needed.