DRM not action

I have selected DRM playback. Screenshot by Lightshot
DRM error on the page: Robust Multi-DRM for Premium Content Protection | Axinom
Screen Screenshot by Lightshot
Widevine DRM does not support the page.
Primetime all setting - cannot be installed.

New verssion -is there hope to improve this?

problem in source code firefox 65;
in future versions will be fixed