Right now I think
cubbi.es is broken, I'm not even able to link my
diasp.org account and I know a fiew people on joindiaspora and other pods are having the same problem as I am. Any time I try, I end up with what appears to be a generic Heroku error page (which means the app is probably throwing a 500 error, without access to the logs I couldn't tell you anything more than that). No idea how to contact support, but I'd love to see it working.