diff --git a/backend/app/services/psa/connectwise/provider.py b/backend/app/services/psa/connectwise/provider.py
index 465f66ab..74f338c8 100644
--- a/backend/app/services/psa/connectwise/provider.py
+++ b/backend/app/services/psa/connectwise/provider.py
@@ -74,7 +74,9 @@ class ConnectWiseProvider(PSAProvider):
 
         conditions: list[str] = []
         if query:
-            conditions.append(f"summary contains '{query}'")
+            # Sanitize: strip single quotes to prevent CW condition injection
+            safe_query = query.replace("'", "")
+            conditions.append(f"summary contains '{safe_query}'")
         if filters.get("board_id"):
             conditions.append(f"board/id = {filters['board_id']}")
         if filters.get("status_id"):
@@ -89,6 +91,8 @@ class ConnectWiseProvider(PSAProvider):
         if board_ids:
             board_list = ", ".join(str(bid) for bid in board_ids)
             conditions.append(f"board/id in ({board_list})")
+        if filters.get("company_id"):
+            conditions.append(f"company/id = {int(filters['company_id'])}")
 
         condition_str = " and ".join(conditions) if conditions else ""
         if condition_str:
diff --git a/frontend/src/pages/TicketsPage.tsx b/frontend/src/pages/TicketsPage.tsx
index bfb28f52..64f11cb7 100644
--- a/frontend/src/pages/TicketsPage.tsx
+++ b/frontend/src/pages/TicketsPage.tsx
@@ -1,6 +1,7 @@
 import { useEffect, useState, useCallback } from 'react'
 import { useSearchParams } from 'react-router-dom'
-import { Plus, Ticket } from 'lucide-react'
+import { Plus, Ticket, AlertTriangle } from 'lucide-react'
+import axios from 'axios'
 import { TicketFilterBar } from '@/components/tickets/TicketFilterBar'
 import { TicketListRow } from '@/components/tickets/TicketListRow'
 import { TicketDetailPanel } from '@/components/tickets/TicketDetailPanel'
@@ -37,6 +38,7 @@ export default function TicketsPage() {
   const [tickets, setTickets] = useState<PSATicketSearchResult[]>([])
   const [total, setTotal] = useState(0)
   const [loading, setLoading] = useState(false)
+  const [psaError, setPsaError] = useState<string | null>(null)
   const [boards, setBoards] = useState<PSABoard[]>([])
   const [statuses, setStatuses] = useState<PSATicketStatusItem[]>([])
   const [priorities, setPriorities] = useState<PSAPriority[]>([])
@@ -66,6 +68,7 @@ export default function TicketsPage() {
   // Fetch tickets on filter/page change
   const fetchTickets = useCallback(async () => {
     setLoading(true)
+    setPsaError(null)
     try {
       const result = await ticketsApi.searchTickets({
         query: filters.search || undefined,
@@ -90,9 +93,20 @@ export default function TicketsPage() {
         })
         return seen.size > 0 ? Array.from(seen, ([id, name]) => ({ id, name })) : prev
       })
-    } catch {
+    } catch (err: unknown) {
       setTickets([])
       setTotal(0)
+      if (axios.isAxiosError(err)) {
+        const status = err.response?.status
+        const detail = (err.response?.data as { detail?: string })?.detail ?? ''
+        if (status === 502 && detail.toLowerCase().includes('permission')) {
+          setPsaError('ConnectWise returned a permissions error. Check that the API member\'s security role has Service Tickets → Inquire → ALL and System → Table Setup → Inquire → ALL.')
+        } else if (status === 502) {
+          setPsaError('ConnectWise is unavailable or returned an error. Check your integration settings.')
+        } else {
+          setPsaError('Failed to load tickets.')
+        }
+      }
     } finally {
       setLoading(false)
     }
@@ -165,7 +179,13 @@ export default function TicketsPage() {
               Loading tickets…
             </div>
           )}
-          {!loading && tickets.length === 0 && (
+          {!loading && psaError && (
+            <div className="mx-6 mt-6 flex items-start gap-3 px-4 py-3 rounded-lg bg-danger-dim border border-danger/30 text-sm text-danger">
+              <AlertTriangle className="w-4 h-4 mt-0.5 shrink-0" />
+              <span>{psaError}</span>
+            </div>
+          )}
+          {!loading && !psaError && tickets.length === 0 && (
             <div className="flex flex-col items-center justify-center py-16 text-muted-foreground text-sm gap-2">
               <Ticket className="w-8 h-8 opacity-30" />
               No tickets match your filters