The latest info is at the QUAST website: http://quast.sf.net/
Detailed manual for the latest version is also there: https://quast.sf.net/manual.html
For issues, please use our GitHub tracker: https://github.com/ablab/quast/issues
For other questions, please write to Dr. Alexey Gurevich: alexey.gurevich@helmholtz-hips.de