YouTube only showing grey placeholders

[Frank Lion]

In that case, what do I need to do to resolve this problem?

Hi Dave,

Based on your answers on this thread as to what you have/haven't done, then you just need to go to about:config and remove the Youtube site specific override entry (right click entry and hit Reset, then restart) you made -

..I have this site specific User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0 which doesn't help.

Put it this way, I am 100% certain such a UA string on SeaMonkey will make Youtube show only grey placeholders.

[amrad]

Hello Frank,

Thanks for your suggestion, that did the trick and I can now see the videos.

Regards,

Dave.