If you encounter a problem or malfunction, try again in a few minutes, often the problem is temporary.

If the problem doesn't go away, send an email to, describing the problem precisely. Please ad the following information:

  • Copy-Paste the error message
  • if possible attach a screen shot
  • paste your Browser version, e.g. Google chrome, MacOS 10.7.5, Version 36.0.1985.125, get this information from the About menu in most Browsers

​​Annotation errors should be reported using the Annatation error form: Report annotation error

If you forgot your password please use the Forgot password link on the home page, if you forgot your username too, you need to contact us.