That happened to me too. I emailed the company that runs it on 27/12/2016. I
could only find the sales email (sa...@salmonlabs.net).
Hello SalmonLabs LLC,
I had an error in Goblin Refuge saying that uploading a file would put
me over my upload limit. The video itself weights only 1.3 MB. Is there
a way I can extend my upload limit? Are you planning to do that in the
future?
Kind regards,
Jorge
Haven't received a reply though. There is also another public Mediagoblin
instance here: http://roaming-initiative.com/mediagoblin/