With 2.4 mobile videos stopped playing

With the latest update (03.17.2016) (version 2.4) videos do not play on mobile devices. Even the video @https://s3bubble.com/rtmp-streaming-example-s3bubble-wordpress-plugin/ doesn’t play on my several mobile devices. (So the problem cannot be about my setup.)

Any others having the same problem?

https://www.ads-software.com/plugins/s3bubble-amazon-s3-audio-streaming/