To verify your domain name in Facebook Business Manager you have a few options.
The easiest is to add the meta-tag to your websites <head> section.
To do this visit your WordPress dashboard.
Click on 'PixelYourSite' near the bottom on the left.
Note: if you do not have this plugin installed go to Plugins > Add New and install/activate it.
Next, click on 'Click for Settings' for the Facebook Pixel.
Then paste your meta-tag in the meta-tag section.
Then click 'Save' at the bottom.
The last step is to clear the cache.
Once the cache is cleared visit your websites homepage and refresh the page.
That will force the new meta-tag to load in the <head> section.
Next, go back to Facebook Business Manager and verify the domain.
