Up and Over garage door

[Morrisman]

Gaz1 - this is all I get for any YT links through the forum It's been like that for months now

'Hmm. We’re having trouble finding that site.

We can’t connect to the server at www.youtube.com.

If you entered the right address, you can:

Try again later
Check your network connection
Check that Firefox has permission to access the web (you might be connected but behind a firewall)'

Sort of the same here, I just get a black screen, no picture, but if I move the progress bar a preview shows. I can't work out what is wrong.