reduce dely between pushing play button and starting playback
There is often a long delay after I hit play. I usually end up hitting the button multiple times to get it to start.
Please open a ticket using the Contact support button of the website in case of an issue with the app.
Regarding your problem it looks like you are streaming content. Because if that playback can only start once the buffering is done which can take some time depending on your connection speed. When playing a downloaded file, playback will start immediately.