From my PC with Chrome I see the video imref linked embedded as usual.
What device/operating system and browser are you using, imref?
One thing I do know is that the plugin does not support "shortened" youtube links. For example "youtu.be/whatever". This is simply a function of the age of the plugin. Unfortunately it is no longer maintained by the original author and hasn't been for some time, so there's not much to be done about it except look for a newer alternative. Probably a project for the off-season.