diff --git a/composer.json b/composer.json
index 0ee8ec85f..1bc309fcd 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
     "forum": "https://torrentpier.com"
   },
   "require": {
-    "php": "^7.4",
+    "php": "^7.4|^8.0",
     "bugsnag/bugsnag": "v3.29.0",
     "egulias/email-validator": "^3.2",
     "filp/whoops": "^2.15",
diff --git a/composer.lock b/composer.lock
index 004e32873..0a850c52c 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "6241213ade775fe6873c1265d649c934",
+    "content-hash": "a0a31557a48a379fcaf7e44571398d48",
     "packages": [
         {
             "name": "bugsnag/bugsnag",
@@ -2380,8 +2380,8 @@
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": {
-        "php": "^7.4"
+        "php": "^7.4|^8.0"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.3.0"
+    "plugin-api-version": "2.2.0"
 }
diff --git a/library/ajax/change_torrent.php b/library/ajax/change_torrent.php
index a37ddd3e8..a56090717 100644
--- a/library/ajax/change_torrent.php
+++ b/library/ajax/change_torrent.php
@@ -49,7 +49,6 @@ if (!$torrent) {
 
 if ($torrent['poster_id'] == $userdata['user_id'] && !IS_AM) {
     if ($type == 'del_torrent' || $type == 'reg' || $type == 'unreg') {
-        true;
     } else {
         $this->ajax_die($lang['ONLY_FOR_MOD']);
     }
diff --git a/library/ajax/edit_user_profile.php b/library/ajax/edit_user_profile.php
index b238abe93..a6fe1b0a7 100644
--- a/library/ajax/edit_user_profile.php
+++ b/library/ajax/edit_user_profile.php
@@ -68,9 +68,9 @@ switch ($field) {
         if (!empty($birthday_date['year'])) {
             if (strtotime($value) >= TIMENOW) {
                 $this->ajax_die($lang['WRONG_BIRTHDAY_FORMAT']);
-            } elseif (bb_date(TIMENOW, 'Y', 'false') - $birthday_date['year'] > $bb_cfg['birthday_max_age']) {
+            } elseif (bb_date(TIMENOW, 'Y', false) - $birthday_date['year'] > $bb_cfg['birthday_max_age']) {
                 $this->ajax_die(sprintf($lang['BIRTHDAY_TO_HIGH'], $bb_cfg['birthday_max_age']));
-            } elseif (bb_date(TIMENOW, 'Y', 'false') - $birthday_date['year'] < $bb_cfg['birthday_min_age']) {
+            } elseif (bb_date(TIMENOW, 'Y', false) - $birthday_date['year'] < $bb_cfg['birthday_min_age']) {
                 $this->ajax_die(sprintf($lang['BIRTHDAY_TO_LOW'], $bb_cfg['birthday_min_age']));
             }
         }
diff --git a/library/ajax/index_data.php b/library/ajax/index_data.php
index 900d9cb35..892ae6eeb 100644
--- a/library/ajax/index_data.php
+++ b/library/ajax/index_data.php
@@ -23,11 +23,13 @@ switch ($mode) {
             'stats',
         ));
 
+        $users = [];
+
         if ($stats['birthday_week_list']) {
             foreach ($stats['birthday_week_list'] as $week) {
-                $html[] = profile_url($week) . ' <span class="small">(' . birthday_age($week['user_birthday']) . ')</span>';
+                $users[] = profile_url($week) . ' <span class="small">(' . birthday_age($week['user_birthday']) . ')</span>';
             }
-            $html = sprintf($lang['BIRTHDAY_WEEK'], $bb_cfg['birthday_check_day'], implode(', ', $html));
+            $html = sprintf($lang['BIRTHDAY_WEEK'], $bb_cfg['birthday_check_day'], implode(', ', $users));
         } else {
             $html = sprintf($lang['NOBIRTHDAY_WEEK'], $bb_cfg['birthday_check_day']);
         }
@@ -39,11 +41,13 @@ switch ($mode) {
             'stats',
         ));
 
+        $users = [];
+
         if ($stats['birthday_today_list']) {
             foreach ($stats['birthday_today_list'] as $today) {
-                $html[] = profile_url($today) . ' <span class="small">(' . birthday_age($today['user_birthday']) . ')</span>';
+                $users[] = profile_url($today) . ' <span class="small">(' . birthday_age($today['user_birthday']) . ')</span>';
             }
-            $html = $lang['BIRTHDAY_TODAY'] . implode(', ', $html);
+            $html = $lang['BIRTHDAY_TODAY'] . implode(', ', $users);
         } else {
             $html = $lang['NOBIRTHDAY_TODAY'];
         }
diff --git a/library/ajax/sitemap.php b/library/ajax/sitemap.php
index 987bc3c5d..5af1fb19f 100644
--- a/library/ajax/sitemap.php
+++ b/library/ajax/sitemap.php
@@ -32,7 +32,7 @@ switch ($mode) {
             $map->createSitemap();
         }
 
-        $map_link = make_url('sitemap/sitemap.xml');
+        $map_link = make_url(hide_bb_path(SITEMAP_DIR . '/sitemap.xml'));
 
         foreach ($bb_cfg['sitemap_sending'] as $source_name => $source_link) {
             if ($map->sendSitemap($source_link, $map_link)) {
diff --git a/library/config.php b/library/config.php
index 52710aded..995ba3ca0 100644
--- a/library/config.php
+++ b/library/config.php
@@ -352,7 +352,7 @@ $bb_cfg['show_sidebar2_on_every_page'] = false;
 
 // Cookie
 $bb_cfg['cookie_domain'] = in_array($domain_name, [getenv('SERVER_ADDR'), 'localhost'], true) ? '' : ".$domain_name";
-$bb_cfg['cookie_secure'] = $domain_ssl ? true : (!empty($_SERVER['HTTPS']) ? true : false);
+$bb_cfg['cookie_secure'] = $domain_ssl ? true : \TorrentPier\Helpers\IsHelper::isHTTPS();
 $bb_cfg['cookie_prefix'] = 'bb_'; // 'bb_'
 
 // Sessions
diff --git a/library/includes/cron/jobs/sitemap.php b/library/includes/cron/jobs/sitemap.php
index fe3adf675..d53986ec2 100644
--- a/library/includes/cron/jobs/sitemap.php
+++ b/library/includes/cron/jobs/sitemap.php
@@ -15,7 +15,7 @@ $map = new TorrentPier\Sitemap();
 $map->createSitemap();
 
 if (file_exists(SITEMAP_DIR . '/sitemap.xml')) {
-    $map_link = make_url('sitemap/sitemap.xml');
+    $map_link = make_url(hide_bb_path(SITEMAP_DIR . '/sitemap.xml'));
 
     foreach ($bb_cfg['sitemap_sending'] as $source_name => $source_link) {
         $map->sendSitemap($source_link, $map_link);