Free email support for Parallels Desktop 10 ends on August 25, 2016.
It means that if you need technical assistance with Parallels Desktop 10 for Mac after this date, you will need to buy a Support Phone Package.
If you would like to receive unlimited 24/7 technical support and experience the best Parallels Desktop for Mac performance, we highly recommend you to upgrade to the latest version - Parallels Desktop 12 for Mac.
Permanent Parallels Desktop 12 licenses include free 30-day post activation phone and chat support and 2 years of free email support from the date of release. Subscriptions for Parallels Desktop 12 include unlimited phone, chat and email support for the period of the subscription validity.
You can upgrade to Parallels Desktop 12 for Mac at http://www.parallels.com/products/desktop/