diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b94800..08b2120 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,8 @@ All notable changes to this project will be documented in this file. See [commit
   sending shortened text and reject URLs that cannot be sent intact.
 - Add accessible action dialogs with cancellation and retry, remove the temporary
   model/effort URL probe, and document URL sharing. No new permissions.
+- Show up front, in the options panel and README, that ChatGPT may require
+  signing in and that an unsent prompt needs Enter or Send.
 
 
  * Options instructions now show the configured keyboard shortcut, update when
diff --git a/README.md b/README.md
index a82672b..e2dba84 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,9 @@ This extension adds ChatGPT as a configurable Firefox search provider. Type
 `gpt <query>` in the address bar to open the query in a new ChatGPT session.
 It uses no API key, custom server, or intermediary handler.
 
+**ChatGPT may require you to sign in. If your prompt is not sent automatically,
+press Enter or click Send in ChatGPT.**
+
 This is an unofficial extension provided by Zavage Software Inc.
 
 - [Firefox Add-ons listing](https://addons.mozilla.org/en-US/firefox/addon/search-with-chatgpt/)
@@ -17,9 +20,8 @@ See `LICENSE.txt` for licensing terms.
 ## Ask about selected text
 
 Highlight text on a webpage, right-click it, and choose **Ask ChatGPT**.
-ChatGPT opens with your selection. If the prompt is not sent automatically,
-press Enter in ChatGPT to send it. Try selecting a paragraph you want explained or
-translated.
+ChatGPT opens with your selection. Try selecting a paragraph you want explained
+or translated.
 
 You can also press **Alt+Shift+G** to use the current selection. With nothing
 selected, the shortcut opens a blank chat. Change the shortcut under
@@ -106,7 +108,8 @@ inactive.
 
 The extension opens ChatGPT with the prompt in the URL. ChatGPT controls what
 happens next: it may send the prompt automatically or leave it in the composer.
-**If the prompt is not sent automatically, press Enter in ChatGPT.**
+You may need to sign in before continuing. **If your prompt is not sent
+automatically, press Enter or click Send in ChatGPT.**
 
 If ChatGPT shows a verification error, try signing in and opening the prompt
 again. Signing in has helped in testing, but does not guarantee automatic
diff --git a/options/options.html b/options/options.html
index b1299f2..127b569 100644
--- a/options/options.html
+++ b/options/options.html
@@ -9,8 +9,7 @@
 <p class="intro">
   This extension adds <a href="https://chatgpt.com/" target="_blank" rel="noopener noreferrer">ChatGPT</a> as a Firefox search engine. Type
   <code>gpt your question</code> in the address bar, select text on a webpage and
-  choose <strong>Ask ChatGPT</strong> from the right-click menu.<span id="shortcut-intro"></span> If the prompt isn’t sent automatically, press Enter in
-  ChatGPT.
+  choose <strong>Ask ChatGPT</strong> from the right-click menu.<span id="shortcut-intro"></span>
 </p>
 
 <p class="intro">
@@ -19,6 +18,11 @@
   every context-menu mode and follows your settings below.
 </p>
 
+<p class="intro">
+  ChatGPT may require you to sign in. If your prompt is not sent automatically,
+  press <strong>Enter</strong> or click <strong>Send</strong> in ChatGPT.
+</p>
+
 <form id="settings" autocomplete="off">
   <div class="field">
     <label for="contextMenuMode">Context menu</label>