Here you can confirm which image uploader you are using. You can change if one doesn’t seem to be working.

You should also confirm what file you are trying to upload, is it parfer than 25MB?

All tests are working and actually with our new CDN upgrade things are faster than ever, globally!!

https://nostr.build/av/1accdc8dd75d8eebcf0e0a21dc6e44c1c23b9b0e5dd93004344483f432ef83a5.mp4