I’ve tried a few Android devices here (Galaxy S8, Google Pixel 2XL), and it loaded and ran fine on the Pixel, seemed to have troubles on the S8, although it is a very long loading time, and once I did need to refresh the browser. Have you considered hosting in the public area of CenarioVR and linking to the content? The CenarioVR servers and content delivery network are set up to handle worldwide video delivery and should give you better performance. Its very similar to other content you have published in the public area, and that content appears to load much quicker and very reliably.
Can you try publishing it to the Public area of CenarioVR and loading from there?