I am using youtube link but no matter what it does NOT work. So I have no idea how to get it to work.

pretty sure that hasn't worked for years.

some people manage to make it work, but it often doesn't, and i don't know of a surefire way to get it working. if several attempts of deleting and re-adding the block don't work, i guess you're just one of the unlucky many.

Yeah that didn't work so I suppose I am among the unlucky ones lol.