I am using ODK Aggregate v2.0.3 on Digital Ocean. I have pointed a free domain .tk to this installation. Everything looks fine when I am logging into Aggregate server. However, getting error "No address associated with hostnameCopying media files failed" when trying to download form to collect. My domain is http://urc-uganda.tk . I tried to set up https and followed the instruction as per documentation; however, my domain not been changed to https.