This is a limitation of the RenPy packaging framework, I'm afraid. Android devices and OSes are all slightly different, and whichever configuration we pick, some phones won't support it :/ We go for the most broadly accepted setup, but I'm afraid it won't work for everyone.
In the future, we'll package to multiple configurations, so that people can find the one that works for their phone/tablet. Unfortunately it's not practical to do that while we're still in the middle of development.