diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index e2aa9a0..736d45c 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -24,4 +24,9 @@ If applicable, add error messages and tracebacks to help explain your problem.
 **Additional context**
 Add any other context about the problem here.
 
-<!-- please also see https://instaloader.github.io/contributing.html for how to report a bug -->
+<!--
+Also see https://instaloader.github.io/contributing.html for how to report a bug.
+
+Please understand that a bug issue that lacks the required information cannot be
+processed.
+-->
diff --git a/.github/ISSUE_TEMPLATE/question.md b/.github/ISSUE_TEMPLATE/question.md
index 3ee1f53..1b318c2 100644
--- a/.github/ISSUE_TEMPLATE/question.md
+++ b/.github/ISSUE_TEMPLATE/question.md
@@ -7,6 +7,12 @@ labels: question
 
 Your question here...
 
-<!-- Please see our documentation: https://instaloader.github.io/ -->
+<!--
+People will be better able and more motivated to provide help if your question
 
-<!-- Basic questions regarding Instaloader's usage might be more appropriate to ask on Stack Overflow -->
+ - has a concise and meaningful title,
+ - is not covered by the documentation: https://instaloader.github.io/,
+ - is actually related to Instaloader (this is not a Python help forum),
+ - has not already been answered here or on other sites such as Stack Overflow: https://stackoverflow.com/questions/tagged/instaloader,
+ - is written in a polite and welcoming tone.
+-->
diff --git a/docs/codesnippets/615_import_firefox_session.py b/docs/codesnippets/615_import_firefox_session.py
index d0c05a4..bfa1e8d 100644
--- a/docs/codesnippets/615_import_firefox_session.py
+++ b/docs/codesnippets/615_import_firefox_session.py
@@ -23,7 +23,7 @@ def get_cookiefile():
 
 def import_session(cookiefile, sessionfile):
     print("Using cookies from {}.".format(cookiefile))
-    conn = connect(cookiefile)
+    conn = connect(f"file:{cookiefile}?immutable=1", uri=True)
     try:
         cookie_data = conn.execute(
             "SELECT name, value FROM moz_cookies WHERE baseDomain='instagram.com'"
diff --git a/docs/contributing.rst b/docs/contributing.rst
index f27b70a..074af63 100644
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -11,6 +11,15 @@ Instaloader's development is organized on
 `GitHub <https://github.com/instaloader/instaloader>`__, where Issues and Pull
 Requests are discussed.
 
+Answering Questions
+-------------------
+
+The easiest way to help out is to answer questions. If you are interested in
+answering questions regarding Instaloader, good places to start are
+
+- `Questions tagged 'instaloader' on Stack Overflow <https://stackoverflow.com/questions/tagged/instaloader>`__,
+- `Instaloader Issues labeled 'question' <https://github.com/instaloader/instaloader/issues?q=is%3Aissue+is%3Aopen+label%3Aquestion>`__.
+
 Reporting Bugs
 --------------
 
@@ -41,22 +50,39 @@ reporting a problem, please keep the following in mind:
 Writing Code or Improving the Documentation
 -------------------------------------------
 
-Changes of the Instaloader source can be proposed as a
-`Pull Request <https://github.com/instaloader/instaloader/pulls>`__. There are only
-few things to consider:
+Improvements of the Instaloader source or its documentation can be proposed as a
+`Pull Request <https://github.com/instaloader/instaloader/pulls>`__.
 
-- Base your Pull Request on the ``master`` branch if it fixes a bug,
-  or the ``upcoming/v4.X`` branch (if it exists at the moment of submitting the PR)
-  otherwise.
+- Please base your Pull Request on
 
-- We use `Pylint <https://www.pylint.org/>`__ for error and syntax checking of
-  the source and `MyPy <https://github.com/python/mypy>`__ for type checking.
-  Beware that sometimes it might be better to disable a warning rather than
-  adapting the code to a tool's desires.
+  - ``master``, which will be released with the next minor release, if it is
 
-- The documentation source is located in the ``docs`` folder. The file
-  ``cli-options.rst`` is merely an RST-formatted copy of ``instaloader --help``
-  output, of which the source is in ``instaloader/__main__.py``.
+    - a bug fix that does not require extensive testing,
+    - an improvement to the documentation,
+
+  - ``upcoming/v4.X``, if it is
+
+    - a new feature,
+    - a bug fix that does require thorough testing before being released to a
+      final version.
+
+- All Pull Requests are analyzed by `Pylint <https://www.pylint.org/>`__ for
+  error and syntax checking of the source and
+  `Mypy <https://github.com/python/mypy>`__ for type checking. You can run them
+  locally with::
+
+     pylint instaloader
+     mypy -m instaloader
+
+- Improvements to the documentation are very welcome. The documentation is
+  created with `Sphinx <https://www.sphinx-doc.org/en/2.0/>`__, version 2,
+  and can be build locally using::
+
+     make -C docs html
+
+- Feel free to create an issue to make sure someone from the Instaloader team
+  agrees that the change might be an improvement, and is happy with your basic
+  proposal, before working on a pull request.
 
 Proposing Features
 ------------------
diff --git a/instaloader/instaloader.py b/instaloader/instaloader.py
index 8b8828e..ed53d4b 100644
--- a/instaloader/instaloader.py
+++ b/instaloader/instaloader.py
@@ -1181,10 +1181,13 @@ class Instaloader:
                     self.save_metadata_json(json_filename, profile)
 
                 # Catch some errors
-                if profile.is_private and (tagged or igtv or highlights or posts):
-                    if not self.context.is_logged_in:
+                if tagged or igtv or highlights or posts:
+                    if (not self.context.is_logged_in and
+                            profile.is_private):
                         raise LoginRequiredException("--login=USERNAME required.")
-                    if not profile.followed_by_viewer and self.context.username != profile.username:
+                    if (self.context.username != profile.username and
+                            profile.is_private and
+                            not profile.followed_by_viewer):
                         raise PrivateProfileNotFollowedException("Private but not followed.")
 
                 # Download tagged, if requested