Blocking Websites

In Firewall, I wanted to make an exception to allow me access to a particular website but I kept getting a message informing me that “We had to cut off * as we can make web exceptions only for the whole domain”. I just cut and pasted the address but I am denied access. Grateful for assistance.

The Firewall doesn’t handle this ‘detections’ side of things you can add an Exceptions in the Settings > General > Exception.
See image example.
Avast-Exception-URL