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/
I think imgchest.com deserves more recognition. It has a UI that’s a lot like old imgur, doesn’t compress the hell out of images and the person that runs it seems pretty cool.
(I’ve also talked to the person who runs postimages, and they seem pretty cool to fwiw.)