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It was .jpg with 2,76 MB

Hmm weird I just checked, it is working, did you use mobile browser or from computer?

I used computer (Windows) and have tried both Chrome and Firefox.

ok, thank you. We will check image uploading service today.

@good-karma
Myself and some of my friends also have the same size issues as well...

Thank you, we are migrating image server into new server in next few days, we hope it will solve the problem.