BTHLABS-66: Prepping for public release: Take five

AKA "Using Apple reviewers as QA for your project". Thanks, y'all! :)

services/backend/hotpocket_backend/apps/ui/templates/ui/accounts/login.html

@@ -36,6 +36,12 @@
                 {% blocktranslate %}Log in with {{ HOTPOCKET_OIDC_DISPLAY_NAME }}{% endblocktranslate %}
               </a>
             {% endif %}
+
+            {% if OPERATOR_EMAIL %}
+              <p class="my-0 mt-2 text-center">
+                <small>{% blocktranslate %}For support with your account, contact the <a href="mailto:{{ OPERATOR_EMAIL }}">instance operator</a>.{% endblocktranslate %}</small>
+              </p>
+            {% endif %}
           </div>
         </div>
         {% include "ui/ui/partials/uname.html" %}