diff --git a/packages/app/src/collection.ts b/packages/app/src/collection.ts
index c8c03d3..d444803 100644
--- a/packages/app/src/collection.ts
+++ b/packages/app/src/collection.ts
@@ -3,7 +3,7 @@ import {indexBy, type Maybe, now} from '@welshman/lib'
 import {withGetter} from '@welshman/store'
 import {getFreshness, setFreshness} from './freshness'
 
-export const collection = <T>({
+export const collection = <T, LoadArgs extends any[]>({
   name,
   store,
   getKey,
@@ -12,13 +12,13 @@ export const collection = <T>({
   name: string
   store: Readable<T[]>
   getKey: (item: T) => string
-  load: (key: string, ...args: any) => Promise<any>
+  load: (key: string, ...args: LoadArgs) => Promise<any>
 }) => {
   const indexStore = withGetter(derived(store, $items => indexBy(getKey, $items)))
   const getItem = (key: string) => indexStore.get().get(key)
   const pending = new Map<string, Promise<Maybe<T>>>()
 
-  const loadItem = async (key: string, ...args: any[]) => {
+  const loadItem = async (key: string, ...args: LoadArgs) => {
     if (getFreshness(name, key) > now() - 3600) {
       return indexStore.get().get(key)
     }
@@ -40,7 +40,7 @@ export const collection = <T>({
     return indexStore.get().get(key)
   }
 
-  const deriveItem = (key: Maybe<string>, ...args: any[]) => {
+  const deriveItem = (key: Maybe<string>, ...args: LoadArgs) => {
     if (!key) {
       return readable(undefined)
     }
diff --git a/packages/app/src/core.ts b/packages/app/src/core.ts
index 4f7caa6..248c895 100644
--- a/packages/app/src/core.ts
+++ b/packages/app/src/core.ts
@@ -7,6 +7,7 @@ import {createEventStore} from "@welshman/store"
 
 export const env: {
   DUFFLEPUD_URL?: string
+  [key: string]: any
 } = {
   DUFFLEPUD_URL: undefined,
 }
diff --git a/packages/app/src/profiles.ts b/packages/app/src/profiles.ts
index cfc1480..516cbe2 100644
--- a/packages/app/src/profiles.ts
+++ b/packages/app/src/profiles.ts
@@ -23,7 +23,7 @@ export const {
   store: profiles,
   getKey: profile => profile.event.pubkey,
   load: async (pubkey: string, hints = [], request: Partial<SubscribeRequest> = {}) => {
-    const relays = getWriteRelayUrls(await loadRelaySelections(pubkey))
+    const relays = getWriteRelayUrls(await loadRelaySelections(pubkey, hints))
 
     return load({
       ...request,
diff --git a/packages/app/src/zappers.ts b/packages/app/src/zappers.ts
index 5efa6ac..c83d1f3 100644
--- a/packages/app/src/zappers.ts
+++ b/packages/app/src/zappers.ts
@@ -1,7 +1,7 @@
 import {writable, derived} from 'svelte/store'
 import {withGetter} from '@welshman/store'
 import type {Zapper} from '@welshman/util'
-import {uniq, bech32ToHex, indexBy, tryCatch, uniqBy, batcher, postJson} from '@welshman/lib'
+import {uniq, identity, bech32ToHex, indexBy, tryCatch, uniqBy, batcher, postJson} from '@welshman/lib'
 import {env} from './core'
 import {collection} from './collection'
 import {profilesByPubkey} from './profiles'
@@ -22,8 +22,10 @@ export const fetchZappers = (lnurls: string[]) => {
     throw new Error("DUFFLEPUD_URL is required to fetch zapper info")
   }
 
-  const res: any = postJson(`${base}/zapper/info`, {lnurls: lnurls.map(bech32ToHex)})
   const zappersByLnurl = new Map<string, Zapper>()
+  const res: any = postJson(`${base}/zapper/info`, {
+    lnurls: lnurls.map(lnurl => tryCatch(() => bech32ToHex(lnurl))).filter(identity),
+  })
 
   for (const {lnurl, info} of res?.data || []) {
     tryCatch(() => zappersByLnurl.set(bech32ToHex(lnurl), info))