diff --git a/src/app.css b/src/app.css
index 9248d56..41cb118 100644
--- a/src/app.css
+++ b/src/app.css
@@ -8,6 +8,7 @@
 			opacity: 0;
 			transform: scale(0.95);
 		}
+
 		100% {
 			opacity: 1;
 			transform: scale(1);
@@ -25,18 +26,28 @@
 
 @utility single-line-input {
 	@apply w-full rounded-sm border-2 border-(--nucleus-accent)/40 bg-(--nucleus-accent)/3 px-3 py-2 font-medium transition-all;
+
 	&:focus {
 		@apply scale-[1.02] border-(--nucleus-accent)/80 bg-(--nucleus-accent)/10 [box-shadow:none] outline-none;
 	}
 }
 
 @utility action-button {
-	@apply rounded-sm border-2 border-(--nucleus-accent) px-3 py-2 font-semibold text-(--nucleus-accent) transition-all hover:scale-105 hover:bg-(--nucleus-accent)/20;
+	@apply rounded-sm border-2 border-(--nucleus-accent) px-3 py-2 font-semibold text-(--nucleus-accent) transition-all;
+
+	&:enabled {
+		@apply hover:scale-105 hover:bg-(--nucleus-accent)/20;
+	}
+
+	&:disabled {
+		@apply opacity-60 hover:scale-100;
+	}
 }
 
 @utility error-disclaimer {
 	@apply rounded-sm border-2 border-red-500 p-2;
 	background-color: color-mix(in srgb, var(--color-red-500) 15%, var(--nucleus-bg));
+
 	p {
 		@apply text-base text-wrap wrap-break-word text-red-500;
 	}
@@ -49,6 +60,10 @@
 
 button {
 	@apply hover:cursor-pointer;
+
+	&:disabled {
+		@apply cursor-not-allowed;
+	}
 }
 
 a {
@@ -87,10 +102,12 @@ a {
 }
 
 @keyframes pulse-highlight {
+
 	0%,
 	100% {
 		box-shadow: 0 0 0 0 var(--nucleus-selected-post);
 	}
+
 	50% {
 		box-shadow: 0 0 20px 5px var(--nucleus-selected-post);
 	}
@@ -101,6 +118,7 @@ a {
 		transform: translateX(144px);
 		opacity: 0;
 	}
+
 	to {
 		transform: translateX(0);
 		opacity: 1;
@@ -112,6 +130,7 @@ a {
 		transform: translateX(-144px);
 		opacity: 0;
 	}
+
 	to {
 		transform: translateX(0);
 		opacity: 1;
@@ -140,4 +159,4 @@ a {
 
 .settings-desc {
 	@apply mb-2 text-sm text-(--nucleus-fg)/80;
-}
+}
\ No newline at end of file
diff --git a/src/components/SettingsModerationTab.svelte b/src/components/SettingsModerationTab.svelte
index 91ed3e4..bb6d2f3 100644
--- a/src/components/SettingsModerationTab.svelte
+++ b/src/components/SettingsModerationTab.svelte
@@ -1,28 +1,29 @@
 <script lang="ts">
 	import MutedAccountItem from './MutedAccountItem.svelte';
 	import VirtualList from '@tutorlatin/svelte-tiny-virtual-list';
-	import type { Did } from '@atcute/lexicons';
-	import type { Preferences } from '$lib/at/pocket';
+	import type { ActorIdentifier, Did } from '@atcute/lexicons';
 	import { allBacklinks, createBlock, deleteBlock, clients } from '$lib/state.svelte';
 	import { blockSource } from '$lib';
+	import { isActorIdentifier } from '@atcute/lexicons/syntax';
+	import { resolveHandle } from '$lib/at/client.svelte';
 
 	interface Props {
 		mutes: Did[];
-		currentPrefs: Preferences | null;
 		onAddMute: (did: Did) => void;
 		onRemoveMute: (did: Did) => void;
 		selectedAccount: Did | null;
 	}
 
-	let { mutes, currentPrefs, onAddMute, onRemoveMute, selectedAccount }: Props = $props();
+	let { mutes, onAddMute, onRemoveMute, selectedAccount }: Props = $props();
 
 	let newMuteInput = $state('');
 	let newBlockInput = $state('');
 
-	const handleAddMute = () => {
+	const handleAddMute = async () => {
 		if (!newMuteInput.trim()) return;
-		const did = newMuteInput.trim() as Did;
-		onAddMute(did);
+		const did = await resolveHandle(newMuteInput.trim() as ActorIdentifier);
+		if (!did.ok) return;
+		onAddMute(did.value);
 		newMuteInput = '';
 	};
 
@@ -44,8 +45,9 @@
 		if (!newBlockInput.trim() || !selectedAccount) return;
 		const client = clients.get(selectedAccount);
 		if (!client) return;
-		const did = newBlockInput.trim() as Did;
-		await createBlock(client, did);
+		const did = await resolveHandle(newBlockInput.trim() as ActorIdentifier);
+		if (!did.ok) return;
+		await createBlock(client, did.value);
 		newBlockInput = '';
 	};
 
@@ -65,10 +67,14 @@
 				<input
 					type="text"
 					bind:value={newMuteInput}
-					placeholder="did:plc:..."
+					placeholder="enter identifier"
 					class="single-line-input flex-1"
 				/>
-				<button onclick={handleAddMute} class="action-button">add</button>
+				<button
+					disabled={!isActorIdentifier(newMuteInput)}
+					onclick={handleAddMute}
+					class="action-button">add</button
+				>
 			</div>
 			{#if mutes.length > 0}
 				<div class="h-fit">
@@ -99,10 +105,14 @@
 				<input
 					type="text"
 					bind:value={newBlockInput}
-					placeholder="did:plc:..."
+					placeholder="enter identifier"
 					class="single-line-input flex-1"
 				/>
-				<button onclick={handleAddBlock} class="action-button">add</button>
+				<button
+					disabled={!isActorIdentifier(newBlockInput)}
+					onclick={handleAddBlock}
+					class="action-button">add</button
+				>
 			</div>
 			{#if blocks.length > 0}
 				<div class="h-fit">
diff --git a/src/components/SettingsView.svelte b/src/components/SettingsView.svelte
index 48172f4..db1db49 100644
--- a/src/components/SettingsView.svelte
+++ b/src/components/SettingsView.svelte
@@ -160,7 +160,6 @@
 		{:else if tab === 'moderation'}
 			<SettingsModerationTab
 				{mutes}
-				{currentPrefs}
 				onAddMute={handleAddMute}
 				onRemoveMute={handleRemoveMute}
 				{selectedAccount}