Hi, all of the Like Jacking options work fine. With some videos, depending on how they have been embedded to the site, the Jacker can't read that embed code. This is more so when a theme or plugin is used to display/manage the video placement.
It could also seem that the Jacker isn't working correctly on any other setting after testing the Modal box if you actually Like Jacked yourself via the Modal box. Once a visitor has been Like Jacked the plugin will then ignore that visitor. So if you have been Like Jacked the plugin is now doing what it's supposed to do and ignore you which means it will now appear to you as though the plugin isn't working when in fact the plugin is doing exactly what it is meant to do.
Some themes, due to the way they are coded and their functions, can actually interfere with the Jacker when you choose the default "Whole Page" jacking option.
Using the Modal box is actually the best option for jacking as many of your visitors as possible because people can't resist the natural reaction of closing that pop-up box when it appears and that is exactly what you want them to do so they get Like Jacked.
Also, bear in mind that if you have told the jacker to only jack 1 in every 5 visitors (as an example) it won't try and like jack every visitor. The same is true if you have set the jacker to be inactive at any time of the day etc.
As you said, the Jacker popped up the Modal box to Like Jack you which means it is working perfectly on your site and doing its thing but if you're still not 100% sure please speak with our support team at and they will happily test this out for you for your peace of mind. All of our product support is managed by the team at the support desk.
Thanks,
Shez