Errrors on FF and Opera but Chrome Ok

Hi,
The plugin is awesome, thank you. Recently I noticed that while I can see my iframe on Chrome, it doesn’t render in Firefox and Opera.

Here are the two errors from FF:

1) This page uses the non standard property “zoom”. Consider using calc() in the relevant property values, or using “transform” along with “transform-origin: 0 0”.

2) Feature Policy: Skipping unsupported feature name “encrypted-media”.

Thanks for your help!