Updated FAQ

FAQ.md

@@ -1715,6 +1715,7 @@ See [here](https://linux.die.net/man/3/connect) for what error codes like EHOSTU
 
 The error *... connect failed: EACCES (Permission denied) ...* means that  *Restrict data usage* was disabled in the Android MIUI app settings for FairEmail.
 On Samsung, and possible other devices, also check: Android settings > Battery > Battery manager / Unmonitored apps.
+Another possible cause is using a VPN with the Android VPN option "*Block connections without VPN*" enabled.
 
 Possible causes are:
 

index.html

@@ -1055,7 +1055,7 @@ Visit https://aka.ms/smtp_auth_disabled for more information.</code></pre>
 <p>Please <a href="#faq127">see here</a> for the error <em>… Syntactically invalid HELO argument(s) …</em>.</p>
 <p>Please <a href="#faq41">see here</a> for the error <em>… Handshake failed …</em>.</p>
 <p>See <a href="https://linux.die.net/man/3/connect">here</a> for what error codes like EHOSTUNREACH and ETIMEDOUT mean.</p>
-<p>The error <em>… connect failed: EACCES (Permission denied) …</em> means that <em>Restrict data usage</em> was disabled in the Android MIUI app settings for FairEmail. On Samsung, and possible other devices, also check: Android settings &gt; Battery &gt; Battery manager / Unmonitored apps.</p>
+<p>The error <em>… connect failed: EACCES (Permission denied) …</em> means that <em>Restrict data usage</em> was disabled in the Android MIUI app settings for FairEmail. On Samsung, and possible other devices, also check: Android settings &gt; Battery &gt; Battery manager / Unmonitored apps. Another possible cause is using a VPN with the Android VPN option “<em>Block connections without VPN</em>” enabled.</p>
 <p>Possible causes are:</p>
 <ul>
 <li>A firewall or router is blocking connections to the server</li>