diff --git a/addons/website_slides/controllers/main.py b/addons/website_slides/controllers/main.py
index 398b18c98df..a8413154fa0 100644
--- a/addons/website_slides/controllers/main.py
+++ b/addons/website_slides/controllers/main.py
@@ -938,7 +938,12 @@ class WebsiteSlides(WebsiteProfile):
 
     @http.route(['/slides/channel/subscribe'], type='json', auth='user', website=True)
     def slide_channel_subscribe(self, channel_id):
-        return request.env['slide.channel'].browse(channel_id).message_subscribe(partner_ids=[request.env.user.partner_id.id])
+        # Presentation Published subtype
+        subtype = request.env.ref("website_slides.mt_channel_slide_published", raise_if_not_found=False)
+        if subtype:
+            return request.env['slide.channel'].browse(channel_id).message_subscribe(
+                partner_ids=[request.env.user.partner_id.id], subtype_ids=subtype.ids)
+        return True
 
     @http.route(['/slides/channel/unsubscribe'], type='json', auth='user', website=True)
     def slide_channel_unsubscribe(self, channel_id):
diff --git a/addons/website_slides/data/slide_user_demo.xml b/addons/website_slides/data/slide_user_demo.xml
index 2c12cb64073..3ef88b88309 100644
--- a/addons/website_slides/data/slide_user_demo.xml
+++ b/addons/website_slides/data/slide_user_demo.xml
@@ -83,7 +83,7 @@
     </record>
 
     <function model="slide.channel" name="message_subscribe"
-            eval="[ref('website_slides.slide_channel_demo_0_gard_0')], [ref('base.partner_admin'), ref('base.partner_demo'), ref('base.partner_demo_portal')]"/>
+            eval="[ref('website_slides.slide_channel_demo_0_gard_0')], [ref('base.partner_admin'), ref('base.partner_demo')]"/>
 
     <!-- CHANNEL 1: Taking care of Trees -->
     <!-- ================================================== -->
@@ -200,7 +200,7 @@
     </record>
 
     <function model="slide.channel" name="message_subscribe"
-            eval="[ref('website_slides.slide_channel_demo_1_gard1')], [ref('base.partner_admin'), ref('base.partner_demo'), ref('base.partner_demo_portal')]"/>
+            eval="[ref('website_slides.slide_channel_demo_1_gard1')], [ref('base.partner_admin'), ref('base.partner_demo')]"/>
 
 
     <!-- CHANNEL 2: Trees, Wood and Garden -->
diff --git a/addons/website_slides/models/slide_channel.py b/addons/website_slides/models/slide_channel.py
index 2fd3c465f61..e69c735fd77 100644
--- a/addons/website_slides/models/slide_channel.py
+++ b/addons/website_slides/models/slide_channel.py
@@ -1123,7 +1123,7 @@ class Channel(models.Model):
             additional_domain=[('request_partner_id', '=', partner.id)]
         ).mapped('res_id')
         for channel in self:
-            if channel.id not in requested_cids:
+            if channel.id not in requested_cids and channel.user_id:
                 activities += channel.activity_schedule(
                     'website_slides.mail_activity_data_access_request',
                     note=_('<b>%s</b> is requesting access to this course.', partner.name),
diff --git a/addons/website_slides/views/website_slides_templates_course.xml b/addons/website_slides/views/website_slides_templates_course.xml
index 4d15702d5cb..f55848e440f 100644
--- a/addons/website_slides/views/website_slides_templates_course.xml
+++ b/addons/website_slides/views/website_slides_templates_course.xml
@@ -376,7 +376,7 @@
                     </div>
                 </div>
             </div>
-            <div t-else="" t-attf-class="alert my-0 bg-100 p-2 #{'o_wslides_js_channel_enroll' if not is_public_user else ''}"
+            <div t-else="" t-attf-class="alert my-0 bg-100 p-2 #{'o_wslides_js_channel_enroll' if not is_public_user and channel.user_id else ''}"
                 t-att-data-channel-id="channel.id">
                 Private Course
                 <div t-if="is_public_user">