Welcome to the Q&A Forum

Fortunately, I think this is not cloaking. But you could look at this situation from a different perspective, such as: Usability. "Billions" of tabbed menu can "hurt" usability. So, Oleg was right. You CAN think of rebuilding the menu structure as:

- Main Menu -
Sub Menu - Sub Menu - Sub Menu - Sub Menu (And to O. ..)

From my point of view I would go on this version as:
1 - Can I set different menu anchors
2 - Can choose to link titles (Mouse Over)
Will this help a bit internal linking structure.

Yours,
Mike.

First, Daniel, you should have access to FTP (File Transfer Protocol or where website is hosted). For this, you will need to contact the company who created the website to request access these data:
1 - Use FTP
2 - FTP account password
3 - Port (if needed)

If the website can be managed through an interface (CMS, eg Wordpress, Joomla or Custom CMS), you'll need a username and a password.

In the case of a simple website consisting of HTML and CSS, you should consider the following issues: Meta Titles, Meta Descriptions, Links Anchors and Titles, Images Alts and visible content. For more information, read the Begginer Guide.

If a CMS like Wordpress, you can install various SEO plugins to ease your work. Example: AllInOne or Yoast SEO Pack. It's easy to use.

Have a great day!
Mike.

Think of it as an "viral campaign". It's not your "fault" that your video is embedded on more then one websites.

On the other hand, at this time, the search engine can not read "information" in a video. So in any case there can be no duplicate content.