“Site Background Slider” appears to be abandoned.

Since a week I get a notification from WordFence about Site Background Slider
“The Plugin “Site Background Slider” appears to be abandoned.”

My client loves the plugin and uses it for many years.
We really want to keep using the plugin.

The plugin isn’t updated in 2 or more years. Is the plugin still good? Can we keep using it? Of is it better to go look for another similar plugin?

Thanks in advance!