A shame that having plain paragraphs and pictures does not work (Android dropped support since N).
Commenting on the design, as a slow reader and non-native English speaker I felt annoyed at having to read against the clock ticking away for each slide (or alternatively, having to click 'pause' again for each slide individually). I hope whatever package this page is based on changes their default settings in future releases.
It's crazy how complicated design is since there are so many form factors to get right. Miss one, and you lose part of your audience.
I have so much respect for front end engineers and designers, because this stuff is not easy.