diff --git a/check_process b/check_process
index ba2cc8f..3ddc082 100644
--- a/check_process
+++ b/check_process
@@ -23,7 +23,6 @@
 		upgrade=1	from_commit=c06f6235a93587e16524fa5b124e4d9e138a8109
 		backup_restore=1
 		multi_instance=0
-		port_already_use=1
 		change_url=1
 ;;; Options
 Email=
diff --git a/scripts/install b/scripts/install
index d76b357..c32aabc 100755
--- a/scripts/install
+++ b/scripts/install
@@ -215,13 +215,10 @@ mkdir -p "$groups"
 #=================================================
 
 ynh_add_config --template="../conf/passwd" --destination="$final_path/data/passwd"
-ynh_store_file_checksum --file="$final_path/data/passwd"
 
 ynh_add_config --template="../conf/groupname.json" --destination="$final_path/groups/$group_name.json"
-ynh_store_file_checksum --file="$final_path/groups/$group_name.json"
 
 ynh_add_config --template="../conf/ice-servers.json" --destination="$final_path/data/ice-servers.json"
-ynh_store_file_checksum --file="$final_path/data/ice-servers.json"
 
 #=================================================
 # ADD SCRIPT FOR COTURN CRON AND APP SERVICE
@@ -230,8 +227,7 @@ ynh_store_file_checksum --file="$final_path/data/ice-servers.json"
 # WARNING : theses command are used in INSTALL, UPGRADE
 # For any update do it in all files
 
-cp ../sources/Coturn_config_rotate.sh $final_path/Coturn_config_rotate.sh
-ynh_replace_string --match_string=__APP__ --replace_string=$app --target_file="$final_path/Coturn_config_rotate.sh"
+ynh_add_config --template="../sources/Coturn_config_rotate.sh" --destination="$final_path/Coturn_config_rotate.sh"
 chmod +x $final_path/Coturn_config_rotate.sh
 
 #=================================================
@@ -249,6 +245,8 @@ chmod -R u=rwX,g=rX,o= /etc/$app
 chmod 770 $final_path/Coturn_config_rotate.sh
 setfacl -R -m user:turnserver:rX  /etc/$app
 setfacl -R -m user:turnserver:rwX  /var/log/$app
+chmod 600 $final_path/data/passwd
+chmod 600 $final_path/data/ice-servers.json
 
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
diff --git a/scripts/restore b/scripts/restore
index a4c0dd8..98a4eac 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -146,6 +146,9 @@ chmod -R u=rwX,g=rX,o= /etc/$app
 chmod 770 $final_path/Coturn_config_rotate.sh
 setfacl -R -m user:turnserver:rX  /etc/$app
 setfacl -R -m user:turnserver:rwX  /var/log/$app
+# Set permissions on config files
+chmod 600 $final_path/data/passwd
+chmod 600 $final_path/data/ice-servers.json
 
 #=================================================
 # RESTORE THE LOGROTATE CONFIGURATION
diff --git a/scripts/upgrade b/scripts/upgrade
index 9f75f7e..56a25d0 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -110,13 +110,11 @@ then
 	# Remove the tmp directory securely
 	ynh_secure_remove --file="$tmpdir"
 
-    ynh_backup_if_checksum_is_different --file="$final_path/data/passwd"
     ynh_add_config --template="../conf/passwd" --destination="$final_path/data/passwd"
-    ynh_store_file_checksum --file="$final_path/data/passwd"
+    chmod 600 $final_path/data/passwd
 
-    ynh_backup_if_checksum_is_different --file="$final_path/data/ice-servers.json"
     ynh_add_config --template="../conf/ice-servers.json" --destination="$final_path/data/ice-servers.json"
-    ynh_store_file_checksum --file="$final_path/data/ice-servers.json"
+    chmod 600 $final_path/data/ice-servers.json
 
 	# Recreate certificates
 	pushd "$final_path/data"
@@ -206,8 +204,7 @@ ynh_store_file_checksum --file="$coturn_config_path"
 # WARNING : theses command are used in INSTALL, UPGRADE
 # For any update do it in all files
 
-cp ../sources/Coturn_config_rotate.sh $final_path/Coturn_config_rotate.sh
-ynh_replace_string --match_string=__APP__ --replace_string=$app --target_file="$final_path/Coturn_config_rotate.sh"
+ynh_add_config --template="../sources/Coturn_config_rotate.sh" --destination="$final_path/Coturn_config_rotate.sh"
 chmod +x $final_path/Coturn_config_rotate.sh
 
 #=================================================