diff --git a/README.md b/README.md
index 1f0eca71..5b137f68 100755
--- a/README.md
+++ b/README.md
@@ -46,6 +46,12 @@ Calibre-Web is a web app providing a clean interface for browsing, reading and d
 3. Optional features can also be installed via pip, please refer to [this page](https://github.com/janeczku/calibre-web/wiki/Dependencies-in-Calibre-Web-Linux-and-Windows) for details 
 4. Calibre-Web can be started afterwards by typing `cps` 
 
+Issues with Raspberry Pi - Raspberry Pi OS:
+Depending on your version of pip it's possible that the installation fails with `Failed to build cryptography
+ERROR: Could not build wheels for cryptography, which is required to install pyproject.toml-based projects`. 
+In this case please try to update pip with `./venv/bin/python3 -m pip install --upgrade pip` first, and then try installing Calibre-Web again. 
+If this isn't working please also install cargo via `sudo apt install cargo`, and try installing Calibre-Web again.
+
 In the Wiki there are also examples for: a [manual installation](https://github.com/janeczku/calibre-web/wiki/Manual-installation), [installation on Linux Mint](https://github.com/janeczku/calibre-web/wiki/How-To:Install-Calibre-Web-in-Linux-Mint-19-or-20), [installation on a Cloud Provider](https://github.com/janeczku/calibre-web/wiki/How-To:-Install-Calibre-Web-on-a-Cloud-Provider).
 
 ## Quick start
diff --git a/cps/tasks/metadata_backup.py b/cps/tasks/metadata_backup.py
index 0bcdf6c1..717e7202 100644
--- a/cps/tasks/metadata_backup.py
+++ b/cps/tasks/metadata_backup.py
@@ -149,7 +149,7 @@ class TaskBackupMetadata(CalibreTask):
         package.set("unique-identifier", "uuid_id")
         package.set("version", "2.0")
 
-        # generate metadata element and all subelements of it
+        # generate metadata element and all sub elements of it
         metadata = etree.SubElement(package, "metadata", nsmap=NSMAP)
         identifier = etree.SubElement(metadata, PURL + "identifier", id="calibre_id", nsmap=NSMAP)
         identifier.set(OPF + "scheme", "calibre")
diff --git a/cps/templates/feed.xml b/cps/templates/feed.xml
index 940fb0da..d2114157 100644
--- a/cps/templates/feed.xml
+++ b/cps/templates/feed.xml
@@ -43,16 +43,17 @@
     <title>{{entry.Books.title}}</title>
     <id>urn:uuid:{{entry.Books.uuid}}</id>
     <updated>{{entry.Books.atom_timestamp}}</updated>
-    {% if entry.Books.authors.__len__() > 0 %}
+    {% for author in entry.Books.authors %}
       <author>
-        <name>{{entry.Books.authors[0].name}}</name>
+        <name>{{author.name}}</name>
       </author>
-    {% endif %}
+    {% endfor %}
     {% if entry.Books.publishers.__len__() > 0 %}
       <publisher>
         <name>{{entry.Books.publishers[0].name}}</name>
       </publisher>
     {% endif %}
+    <published>{{entry.Books.pubdate.strftime("%Y-%m-%dT%H:%M:%S+00:00")}}</published>
     {% for lang in entry.Books.languages %}
       <dcterms:language>{{lang.lang_code}}</dcterms:language>
     {% endfor %}
diff --git a/cps/web.py b/cps/web.py
index 45e62ec5..5320c94b 100644
--- a/cps/web.py
+++ b/cps/web.py
@@ -1411,10 +1411,10 @@ def change_profile(kobo_support, local_oauth_check, oauth_status, translations,
     current_user.random_books = 0
     try:
         if current_user.role_passwd() or current_user.role_admin():
-            if to_save.get('password', "") != "":
-                current_user.password = generate_password_hash(valid_password(to_save.get("password", "")))
-        if to_save.get("eReader_mail", current_user.kindle_mail) != current_user.kindle_mail:
-            current_user.kindle_mail = valid_email(to_save.get("eReader_mail"))
+            if to_save.get("password", "") != "":
+	            current_user.password = generate_password_hash(to_save.get("password"))
+        if to_save.get("kindle_mail", current_user.kindle_mail) != current_user.kindle_mail:
+            current_user.kindle_mail = valid_email(to_save.get("kindle_mail"))
         new_email = valid_email(to_save.get("email", current_user.email))
         if not new_email:
             raise Exception(_("Email can't be empty and has to be a valid Email"))