diff --git a/lbplanner/classes/helpers/slot_helper.php b/lbplanner/classes/helpers/slot_helper.php
index 3335db04..e85c5dba 100644
--- a/lbplanner/classes/helpers/slot_helper.php
+++ b/lbplanner/classes/helpers/slot_helper.php
@@ -321,7 +321,8 @@ public static function filter_slots_for_time(array $allslots, int $range): array
         foreach ($allslots as $slot) {
             $slotdatetime = self::calculate_slot_datetime($slot, $now);
 
-            if ($now->diff($slotdatetime)->days <= $range) {
+            // Compare only date difference, ignoring time.
+            if ($now->setTime(0, 0, 0)->diff($slotdatetime->setTime(0, 0, 0))->days < $range) {
                 array_push($slots, $slot);
             }
         }
diff --git a/lbplanner/db/services.php b/lbplanner/db/services.php
index 6b9941a1..c4e1c2cc 100644
--- a/lbplanner/db/services.php
+++ b/lbplanner/db/services.php
@@ -435,6 +435,7 @@
             'local_lbplanner_slots_get_all_slots',
             'local_lbplanner_slots_get_my_slots',
             'local_lbplanner_slots_get_slot_filters',
+            'local_lbplanner_slots_get_slot_reservations',
             'local_lbplanner_slots_get_student_slots',
             'local_lbplanner_slots_get_supervisor_slots',
             'local_lbplanner_slots_remove_slot_supervisor',
diff --git a/lbplanner/services/plan/update_access.php b/lbplanner/services/plan/update_access.php
index 045f9558..901e5c59 100644
--- a/lbplanner/services/plan/update_access.php
+++ b/lbplanner/services/plan/update_access.php
@@ -71,7 +71,7 @@ public static function update_access(int $accesstype, int $memberid) {
 
         $planid = plan_helper::get_plan_id($USER->id);
 
-        if (plan_helper::get_owner($planid) !== $USER->id) {
+        if (plan_helper::get_owner($planid) !== intval($USER->id)) {
             throw new \moodle_exception('Access denied');
         }
 
diff --git a/lbplanner/services/slots/book_reservation.php b/lbplanner/services/slots/book_reservation.php
index 0f012baa..0cf98bd8 100644
--- a/lbplanner/services/slots/book_reservation.php
+++ b/lbplanner/services/slots/book_reservation.php
@@ -20,6 +20,7 @@
 
 use core_user;
 use core_external\{external_api, external_function_parameters, external_single_structure, external_value};
+use DateTimeZone;
 use local_lbplanner\enums\NOTIF_TRIGGER;
 use local_lbplanner\helpers\notifications_helper;
 use local_lbplanner\helpers\slot_helper;
@@ -82,14 +83,15 @@ public static function book_reservation(int $slotid, string $date, int $userid):
             ]
         );
 
-        $now = new DateTimeImmutable();
-        $dateobj = DateTimeImmutable::createFromFormat("Y-m-d", $date);
+        $utctz = new DateTimeZone('UTC');
+        $now = new DateTimeImmutable('today', $utctz);
+        $dateobj = DateTimeImmutable::createFromFormat("Y-m-d", $date, $utctz);
         if ($dateobj === false) {
             throw new \moodle_exception("invalid date formatting: got '{$date}', must be YYYY-MM-DD");
         }
         $td = $now->diff($dateobj);
 
-        if ($td->invert) {
+        if ($td->invert === 1) {
             throw new \moodle_exception('Can\'t reserve date in the past');
         }
 
diff --git a/lbplanner/version.php b/lbplanner/version.php
index cef47ea5..6faf6ef6 100644
--- a/lbplanner/version.php
+++ b/lbplanner/version.php
@@ -24,11 +24,11 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$release = '0.0.0';
+$release = '1.0.0';
 
 $plugin->component = 'local_lbplanner';
-$plugin->release = 'Alpha v.'.$release;
-$plugin->version = 2025012803;
+$plugin->release = 'Beta v.'.$release;
+$plugin->version = 2025021100;
 $plugin->dependencies = [
     // Depend upon version 2023110600 of local_modcustomfields.
     'local_modcustomfields' => 2023110600,