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).
Weird, I am in the uk and can use catbox no problem
Not blocked in the UK here for me. Sounds like an ISP specific thing.
Seems to be blocked for a friend from the philippines too iirc. Combined with other replies saying they can access it from some of these, I assume that list is outdated.
Website works for me here in the Philippines.