Some images are locked ?

You'll need to provide a link to a post you wish us to take a look at - that way we can see what's going on.

There is a number (#2 for example) in the upper far right corner of every post. That number is a link to that exact post. Simply copy and paste the link from that number into your post here for us to go to the post you're talking about.

 

The image didn't upload. It's not there. You're using the mobile app. There are a number of reasons an image wouldn't load/upload on a mobile app, i.e. connectivity issues. You could also try using either a desktop computer or use the browser in your mobile device.