diff --git a/system/blueprints/config/system.yaml b/system/blueprints/config/system.yaml
index cfb8121a1..371b00755 100644
--- a/system/blueprints/config/system.yaml
+++ b/system/blueprints/config/system.yaml
@@ -58,7 +58,7 @@ form:
                     default: "jS M Y"
                     options:
                         "F jS \\a\\t g:ia": Date1
-                        "l jS of F g:i A": Date2
+                        "l jS \\of F g:i A": Date2
                         "D, m M Y G:i:s": Date3
                         "d-m-y G:i": Date4
                         "jS M Y": Date5
@@ -71,7 +71,7 @@ form:
                     help: PLUGIN_ADMIN.LONG_DATE_FORMAT_HELP
                     options:
                         "F jS \\a\\t g:ia": Date1
-                        "l jS of F g:i A": Date2
+                        "l jS \\of F g:i A": Date2
                         "D, m M Y G:i:s": Date3
                         "d-m-y G:i": Date4
                         "jS M Y": Date5
@@ -324,7 +324,7 @@ form:
                     size: small
                     classes: fancy
                     label: PLUGIN_ADMIN.CACHE_CHECK_METHOD
-                    help: PLUGIN_ADMIN.CACHE_CHECK_METHOD
+                    help: PLUGIN_ADMIN.CACHE_CHECK_METHOD_HELP
                     options:
                         file: File
                         folder: Folder
diff --git a/system/blueprints/user/account_new.yaml b/system/blueprints/user/account_new.yaml
index 202f68814..6c6505bdb 100644
--- a/system/blueprints/user/account_new.yaml
+++ b/system/blueprints/user/account_new.yaml
@@ -11,5 +11,6 @@ form:
     username:
       type: text
       label: PLUGIN_ADMIN.USERNAME
+      help: PLUGIN_ADMIN.USERNAME_HELP
       validate:
         required: true
diff --git a/system/src/Grav/Common/Page/Page.php b/system/src/Grav/Common/Page/Page.php
index 4e88ce5a0..ed961594e 100644
--- a/system/src/Grav/Common/Page/Page.php
+++ b/system/src/Grav/Common/Page/Page.php
@@ -1737,7 +1737,7 @@ class Page
 
         if (isset($routes[$uri_path])) {
             $child_page = $pages->dispatch($uri->route())->parent();
-            while (!$child_page->root()) {
+            if ($child_page) while (!$child_page->root()) {
                 if ($this->path() == $child_page->path()) {
                     return true;
                 }
diff --git a/system/src/Grav/Console/Cli/NewUserCommand.php b/system/src/Grav/Console/Cli/NewUserCommand.php
index cbab7804d..2e3da7db8 100644
--- a/system/src/Grav/Console/Cli/NewUserCommand.php
+++ b/system/src/Grav/Console/Cli/NewUserCommand.php
@@ -53,7 +53,7 @@ class NewUserCommand extends Command
         $question->setValidator(function ($value) {
             if (!preg_match('/^[a-z0-9_-]{3,16}$/', $value)) {
                 throw new RuntimeException(
-                    'Username should be between 3 and 16 comprised of lowercase letters, numbers, underscores and hyphens'
+                    'Username should be between 3 and 16 characters, including lowercase letters, numbers, underscores, and hyphens. Uppercase letters, spaces, and special characters are not allowed'
                 );
             }
             if (file_exists(self::getGrav()['locator']->findResource('user://accounts/' . $value . YAML_EXT))) {