The reason for this is quite simple the Quick Supports function only supports the most common screen capture events that occur on most Android devices.

If you're working with a device that has a very specific layout or doesn't respond correctly to certain commands, then the TeamViewer QuickSupport service may not be the ideal solution for your needs. While the TeamViewer software itself is quite robust and versatile, there are a few things that work best with the specific hardware requirements of the Android ecosystem. I've used this product extensively on both desktop and mobile devices running various platforms, and while the remote control support package is great for many individuals and companies, it has one major shortcoming that I'd like to discuss with you today. For the past few years TeamViewer has been providing their clients with a remote support system, in which they allow their clients to use their own custom Android interface, and use a variety of other features built right into the TeamViewer platform, including screen capture, sharing documents and other various options.

Teamviewer 12 quicksupport