laverna.cc does not open

I have been using laverna notes web without problems during more than a year. But since 5 or 6 months ago i can not open laverna.cc site as i used to. When i click this site: https://laverna.github.io/static-laverna/, it opens the usual page of laverna but without my notes, all blank I can not access my notes anymore. Unfortunately i did not make a back up in dropbox for the last notes. What can i do to recover them? Hope you can help me. Thanks a lot