Imgur now blocks several VPNs and have issues loading embedded previews in several fediverse platforms. So instead of using imgur, you could use one of the following alternatives for uploading your images.
https://postimages.org/
https://imgbox.com/
https://imgbb.com/
https://www.imagebam.com/
They look good. Large size limit of 200 mb and NSFW-friendly. But unfortunately, according to their FAQ, they are blocked in Australia, UK, Ireland, Iran and Afghanistan (the latter two are not surprising though).