Android Boxes Teamviewer Update
You can click on the below picture and the download will begin
If it does not respond when you click on the picture below then click on this link here on the right Page to Quicksupport thereafter scroll down to Additional downloads section and Teamviewer QuickSupport and download the file.
scroll to the bottom this page and download it.
Use appinstaller or file browser to install it and update to the latest version