diff --git a/README.md b/README.md
index d0d203b5a1828a942356a4b8add25748017f9e3e..39a14683aa7688ef96cc74fcfb96e444087482e9 100755
--- a/README.md
+++ b/README.md
@@ -41,6 +41,7 @@ Note: Use ``scp mycert.crt user@host:/home/user/`` and ``scp mycert.key user@hos
 2. Adapt your (inventory-)config with ``nano /opt/otree/otree-ansible/group_vars/otree_servers.yml`` from the provided example accordingly (press "Strg-x", then "j" to save):
 
 ```
+[...]
 # fqdn of the otree parents server
 otree_domain: "company.org"
 # linux group for the otree users
@@ -54,9 +55,7 @@ otree_users:
     override: yes
     # redis queue. Note don't use a slot twice, there are 16 slots available (0-15)
     redis: "redis://localhost:6379/1"
-    # which database should be used. Examples: "postgres://USER:PASSWORD@HOST:PORT/NAME" or "sqlite:////home/user/db.sqlite3"
-    database: "sqlite:////home/otree1/db.sqlite3"
-    # otree admin password
+    # otree admin password (also used for postgres db, don't use character "@" or ":" in it)
     admin_pw: "mysecretpw1"
     # auth level, possible values: "STUDY", "DEMO"
     auth_level: "STUDY"
@@ -70,6 +69,7 @@ otree_users:
     python_binary_path: "/usr/bin/python3.7"
     # app git-repository (optional value) 
     # app_repo: "https://github.com/oTree-org/oTree.git"  
+[...]
 ```
 
 ### get the otree project on your server
diff --git a/group_vars/otree_servers.yml.example b/group_vars/otree_servers.yml.example
index 5670fca8c3ec8723b579faf545ea84555cb2d06e..6de9cc91d557b013c4434cc778f8e91600d251de 100755
--- a/group_vars/otree_servers.yml.example
+++ b/group_vars/otree_servers.yml.example
@@ -7,7 +7,7 @@ home_path: "/home"
 nginx_config_path: "/etc/nginx"
 nginx_sites_available: "{{ nginx_config_path }}/sites-available"
 nginx_sites_enabled: "{{ nginx_config_path }}/sites-enabled"
-default_redirection: "https:// mydomain "
+# default_redirection: "https:// mydomain " OPTIONAL
 
 otree_domain: "company.org"
 # fqdn of the otree parent domain
@@ -16,16 +16,14 @@ otree_group_name: "otreeusers"
 
 otree_users:
 # list of users for the available otree instances
-  otree1:
+  otree:
   # linux username
     override: yes
     # should a existing otree environment be overriden
     redis: "redis://localhost:6379/1"
     # redis queue. Note don't use a slot twice, there are 16 slots available (0-15)
-    database: "sqlite:///{{ home_path }}/otree1/db.sqlite3"
-    # which database should be used. Examples: "postgres://USER:PASSWORD@HOST:PORT/NAME" or "sqlite:///{{ home_path }}/user/db.sqlite3"
     admin_pw: "mysecretpw1"
-    # otree admin password
+    # otree admin password (also used for postgres db, don't use character "@" or ":" in it)
     auth_level: "STUDY"
     # auth level, possible values: "STUDY", "DEMO"
     secret_key: "safaho9awefzuwf"
@@ -42,9 +40,7 @@ otree_users:
     app_repo: "https://github.com/oTree-org/oTree.git"    
     # optional: if set clone provided git repository instead of provided directory
     # for ssh: git@domain:project-group/project.git
-    pre_release: yes
     redis: "redis://localhost:6379/2"
-    database: "sqlite:///{{ home_path }/otree2/db.sqlite3"
     admin_pw: "mysecretpw2"
     auth_level: "DEMO"
     secret_key: "sdfunlidsgjndrsgf"