The developer is stuck with the latest version

[Marty92]

What surprises me most is that the DRM problems at Amazon and Netflix were fixed very quickly last year and this time it's taken so long and there's still no solution in sight.

[DVDalibaba]

Recent updates have added 1080p encoding for amzn, which shows that the developer is stuck and has never had a solution. because if they had a solution they wouldn't need to include encoding.