Test...
There's something wrong with the URL.
Where's the original URL of this upload? there should be another link that will pop another URL if you choose "copy image address".
I see there is nothing wrong with the URL link and the BBCode. He/her use
https://imgbb.com/.
[img]https://i.ibb.co/SQqYdW4/KIMG0770.jpg[/img]
It seems the file size is too large.
I try to reduce it until the file size is under 2.5 MB with an image processing application and reupload to
https://imgbb.com/. Here are the results.
[img]https://i.ibb.co/LYZmH04/KIMG0770-edit.jpg[/img]
Reference:Why doesn't this image work then? It's a GIF hosted on Imgur.
It's too big. The limit is 2.5 MB
Browsers nowadays like to make as many simultaneous requests for images as there are images on the page (this is stupid IMO). So all of your images are downloaded at once via the proxy, but your connection isn't fast enough to deliver everything before the proxy times out after a few seconds. Not being able to serve this much data quickly enough is understandable, but it still causes issues. The problem is that browsers can wait forever for servers to respond, so they're fine with issuing even hundreds of connections at a time, but the forum's server cannot wait. Each proxy connection takes up resources, so it must complete quickly. I'm not really sure how to fix this.
There's no reason to force readers to download huge images when they load the page. If high resolution is really necessary, you can include a link to the image.