My Ad Limiter add-on is down to 19 users on Firefox. Used to be thousands.
It won't work on Chrome at all now. I'm shutting down SiteTruth, after almost 20 years.[1]
I hate to be the guy to say this, but uBlockOrigin outcompeted you half a decade ago. It's the first extension Install on a fresh install and I have never heard of your extension or site.
Fwiw, I've been using Firefox for 20+ years, I hate ads with passion and yet I never heard of your add-on until just now.
I don't remember what I've used before uBlock Origin, but since its appearance it's basically solved the ad blocking on Firefox and became the de-facto standard for the browser.
You probably lost all your users to it, rather that they all stopped using FF.