You had: [IMG]https://imgur.com/a/wZHVwYC[/IMG]

That's not an image. That's an Imgur post with two images in it. You need to put links you actual images (ending in .jpg or .png) in between your IMG tags, like this:

[IMG]https://i.imgur.com/yrkfxnM.jpg[/IMG]
[IMG]https://i.imgur.com/ihIlbyl.jpg[/IMG]

^^^ Note that these don't show as in-line image because I surrounded them with NOPARSE tags.

-Uwe-