No, that doesn't sound like a real thing at all.

It might have been generated by an ad on the site, or it might be something inserted by an add-on.

Could you check for and disable any nonessential or unrecognized extensions on the Add-ons page. Either:

• Ctrl+Shift+a
• "3-bar" menu button (or Tools menu) > Add-ons

In the left column, click Extensions. Then cast a critical eye over the list on the right side and, if in doubt, disable.

Often a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step.

Does that eliminate suspicious popups?

. Whenever you get a message / popup like that;

DO NOT USE ANY OF THE PROVIDED LINKS OR ANY PHONE NUMBERS ! !

Such messages are only Spam that could lead you to Fake Support. Not only can they damage or hack your system, they charge you to do so.

You can report such a site at; Google Report Phishing Page {web link} which is the same when done while on site by going to Help > Report Web Forgery

Help us safeguard Mozilla’s trademarks by reporting misuse {web link}

Thanks so much! That's what my instincts told me.

Please take a look at this image. Can you assist in more detail? Thank you

Hi kguiducci, let's continue in your thread here: https://support.mozilla.org/questions/1109956