Hi,

Thanks for contacting us.

1 I've created my page using the Nicepage desktop app. I've about finished but need to add a video I created to explain the page, but I cannot figure out how to upload it as an element, so I can drag it to the cell. Can anyone help me?

Move the video to your project's folder first. It will be easier for you to manage later on.
Go to Elements >> video >> add video >> on the property panel choose "video upload" >> Select File >> choose your video. Done.

2 Is it better to use the online Nicepage or the desktop app. It would matter if they synced with each other so I can find my work on the desktop or online. So what are the purposes of the desktop app and the advantage of it over the online Nicepage?

That's up to you and your needs. Desktop App and Online Builder are two different packages, and no synchronization between them. In the Desktop App, you can create websites and export them to your own Hosting. In the Online Builder, you are creating the websites, and we provide Hosting space for your websites. You can export your website as a project from Online Builder and import it in the Desktop App.
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Sincerely,
Ahmad M.
Nicepage Support Team

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