From time to time I try it again. I not upload my pictures to any other page and give my rights away as so many others are doing without thinking.
Image upload : Unable to contact the server.
See you next time! / Bis nächstes Mal!
Thank you for your attention! / Danke für Deine Aufmerksamkeit!
Original content by
Schaman Gerbert 
I have the same problem. So I load them first into Steemit or Hive and then copy them from there and past them into the Blurtter page. It seems it takes some time fixing this issue, so that's the quickest fix for now
Patience is the Mother of all Virtues.