How do I run a new webmacs instance instead of a new buffer from the command-line?

When a webmacs instance is already running, calling webmacs <url> from a shell will open the URL in a new buffer of the running instance. To run a fresh new instance, use webmacs –instance <instance-unique-name> <url>.

Website is blocked, turn off the extensions

This message will appear in the browser when the URL has got filtered by the ad-blocker.

To overcome this, you can temporarily disable the ad-blocker with M-x toggle-ad-block.

For a permanent change, edit the adblock-urls-rules variable, to remove some URLs in there. Note if you set this variable to an empty list, the adblocker will be completely disabled. See the Variables section in the documentation.