Hi,
http://www.displaylink.com/downloads/android has links to the Google Play Store and to 360.cn.
That 360.cn website seems to offer a direct download for the APK file of DisplayLink Presenter for Android.
However, the website is not in English and there is no indication which version of the APK is being offered, so it is unclear if it is the latest version. Also, it doesn't offer the new DisplayLink Desktop for Android app.
Any chance you could add direct downloads for both:
onto the official DisplayLink website, i.e.
http://www.displaylink.com/downloads/android ?
The Windows, macOS and Linux binaries can also directly be downloaded from displaylink.com, so why not do the same for the Android apps? Not everyone uses Google Play Store and not every device has Google apps installed.
Regards