MIT App Inventor web application corrupted

I had several project in the MIT app inventor web application (http://ai2.appinventor.mit.edu/) working fine, but suddenly I lost internet connection, after that I couldn't export APKs. I finally delete all projects, but the bug in the web application is that now even I start a new project I can't access the native components (screen, media, etc).

Should I delete my account or how can I reset the development environment?