Try to use a different Nostr client.

Is there any way to block this account? It keeps posting adult content even though I don't follow it. I’ve also muted the account, but its adult content still appears.
https://primal.net/p/nprofile1qqsqg3fkc47de0shfn3r7q25j4kft4rpjvdp2xnkz9ttwdz7lryqu3sgvjgk9
Discussion
That’s what I would suggest. There’re even options that the images appears blurred from people that you not follow.