Funnily enough, I put that string into my muted list on Amethyst last week and I only see those notifications on Amethyst, never on Primal, which is my main app (mobile and desktop)
Filtering is no longer working in #Amethyst for me now. But switching around relays has helped a lot.
What method are you using for switching relays? I noticed that I can remove the ones marked in red via Primal on Android, but not on desktop browser.
I'm using Amethyst mostly and occasionally Primal on Android, but not on desktop. I usually use Nostrudel on desktop, but that's not often.
just use my free relay that blocks spam and syncs to the major relays for you: relay.poster.place
Yours is on my small list. 🤙