What happened to Ultimate Status Bar?

I got a new MacBook after about a year of not owning a computer at all and I discovered that Ultimate Status Bar for Safari is gone. Their site is down as well.

Does anyone happen to know what happened to it?

Er7vv_medium

Gentle Status Bar has been down for a long time, but this is the first time I've noticed this particular extension being unavailable. I really don't like the solid status bar at the bottom. It's outdated design in my opinion.