Generally, these types of tools are installed as a plugin in the browser. Disable the pop-up blocker or ads-blocker to allow the correct display of all content.
In Google Chrome:
Disable an extension
Open Chrome.
Select More > More tools > Extensions.
Turn off the extension you want to disable.
Uninstall an extension
Open Chrome.
Select More > More tools > Extensions.
Next to the extension you want to remove, select Remove.
To confirm, select Remove.
Tip: To remove an extension that's a button on the browser toolbar, right-click the button and select Remove from Chrome.
In Mozilla Firefox:
How to disable plugins
Disabling a plugin will turn it off without removing it:
Click the menu button, click Add-ons, and select Plugins.
Select the plugin you wish to disable.
Select Never Activate through the ellipsis icon (3-dot).
To re-enable the plugin, find it in the Plugins list and select Always Activate through the ellipsis icon (3-dot).
If you are not able to uninstall a plugin, see Manually uninstalling a plugin.