i can attach no image attach option at all o_O
Browser Opera, Addon uMatrix all allowed.
I did it by URL with ibb.co
<EDIT: Snip image>
I'm just wondering if this is an anti-spam measure, But I'm sure I have seen others with only one to two being able to attach images. So I'm not sure what has happened here.
Now you have 3 posts you shouldn't get the captcha when posting next time and hopefully not when trying to attach an image.
Note:
You can't put a URL in the attachments and other options, as mentioned in that section images and text files only, see attached image 1.
The image has to be located on your system not in a URL/web location, see attached image 2.