I need to be able to use a link from Vimeo, not YouTube for the Header video but YouTube is the only option in Appearance/Customize/Header Area/Header Media. Please tell me how I can use Vimeo. Thank you.
Hello, please note that this feature comes from WordPress itself:
You can try to use the Smart Slider 3 plugin, it supports Vimeo videos:
Please check this topic for details how to use it with Sydney Pro theme:
Please feel free to ask any other questions that you might have.
Kind Regards, Roman.