diff --git a/check_process b/check_process
index 89023cf..409ed35 100644
--- a/check_process
+++ b/check_process
@@ -14,7 +14,7 @@
 			port="666"	(PORT)
 	; pre-install
 			sudo yunohost app fetchlist
-			sudo yunohost app install zerotier
+			sudo yunohost app install https://github.com/tituspijean/zerotier_ynh
 	; Checks
 			pkg_linter=1
 			setup_sub_dir=0
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 5070404..580f233 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -109,7 +109,7 @@ export N_PREFIX="$n_install_dir"
 # usage: ynh_install_n
 #
 # Requires YunoHost version 2.7.12 or higher.
-ynh_install_n () {
+EXPERIMENTAL_ynh_install_n () {
 	ynh_print_info --message="Installation of N - Node.js version management"
 	# Build an app.src for n
 	mkdir -p "../conf"
@@ -160,7 +160,7 @@ SOURCE_SUM=3983fa3f00d4bf85ba8e21f1a590f6e28938093abe0bb950aeea52b1717471fc" > "
 # usage: ynh_use_nodejs
 #
 # Requires YunoHost version 2.7.12 or higher.
-ynh_use_nodejs () {
+EXPERIMENTAL_ynh_use_nodejs () {
 	nodejs_version=$(ynh_app_setting_get --app=$app --key=nodejs_version)
 
 	# Get the absolute path of this version of node
@@ -196,7 +196,7 @@ ynh_use_nodejs () {
 # Refer to ynh_use_nodejs for more information about available commands and variables
 #
 # Requires YunoHost version 2.7.12 or higher.
-ynh_install_nodejs () {
+EXPERIMENTAL_ynh_install_nodejs () {
 	# Use n, https://github.com/tj/n to manage the nodejs versions
 
 	# Declare an array to define the options of this helper.
@@ -274,7 +274,7 @@ ynh_install_nodejs () {
 # usage: ynh_remove_nodejs
 #
 # Requires YunoHost version 2.7.12 or higher.
-ynh_remove_nodejs () {
+EXPERIMENTAL_ynh_remove_nodejs () {
 	nodejs_version=$(ynh_app_setting_get --app=$app --key=nodejs_version)
 
 	# Remove the line for this app
diff --git a/scripts/backup b/scripts/backup
index 4bc5361..75059f1 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -6,9 +6,9 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
-source /usr/share/yunohost/helpers
 #Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
 source ../settings/scripts/_common.sh
+source /usr/share/yunohost/helpers
 
 #=================================================
 # MANAGE SCRIPT FAILURE
diff --git a/scripts/change_url b/scripts/change_url
index 930ac61..3f21bc8 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -6,8 +6,8 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
-source /usr/share/yunohost/helpers
 source _common.sh
+source /usr/share/yunohost/helpers
 
 #=================================================
 # RETRIEVE ARGUMENTS
diff --git a/scripts/install b/scripts/install
index 0ad2a60..4d887c1 100644
--- a/scripts/install
+++ b/scripts/install
@@ -6,8 +6,8 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
-source /usr/share/yunohost/helpers
 source _common.sh
+source /usr/share/yunohost/helpers
 
 #=================================================
 # MANAGE SCRIPT FAILURE
@@ -112,8 +112,8 @@ ynh_script_progression --message="Installing dependencies..." --time --weight=1
 
 ynh_install_app_dependencies $pkg_dependencies
 
-ynh_install_nodejs --nodejs_version=$nodejs_version
-ynh_use_nodejs
+EXPERIMENTAL_ynh_install_nodejs --nodejs_version=$nodejs_version
+EXPERIMENTAL_ynh_use_nodejs
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
diff --git a/scripts/remove b/scripts/remove
index b9beecd..89f6ba4 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -6,8 +6,8 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
-source /usr/share/yunohost/helpers
 source _common.sh
+source /usr/share/yunohost/helpers
 
 #=================================================
 # LOAD SETTINGS
@@ -48,7 +48,7 @@ ynh_script_progression --message="Removing dependencies..." --time --weight=1
 
 # Remove metapackage and its dependencies
 ynh_remove_app_dependencies
-ynh_remove_nodejs
+EXPERIMENTAL_ynh_remove_nodejs
 
 #=================================================
 # REMOVE APP MAIN DIR
diff --git a/scripts/restore b/scripts/restore
index 538f833..3d63998 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -6,9 +6,9 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
-source /usr/share/yunohost/helpers
 #Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
 source ../settings/scripts/_common.sh
+source /usr/share/yunohost/helpers
 
 #=================================================
 # MANAGE SCRIPT FAILURE
@@ -80,7 +80,7 @@ chown -R $app: $final_path
 #=================================================
 ynh_script_progression --message="Reinstalling dependencies..." --time --weight=1
 
-ynh_install_nodejs --nodejs_version=$nodejs_version
+EXPERIMENTAL_ynh_install_nodejs --nodejs_version=$nodejs_version
 
 #=================================================
 # RESTORE SYSTEMD
diff --git a/scripts/upgrade b/scripts/upgrade
index de21424..18f241a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -6,8 +6,8 @@
 # IMPORT GENERIC HELPERS
 #=================================================
 
-source /usr/share/yunohost/helpers
 source _common.sh
+source /usr/share/yunohost/helpers
 
 #=================================================
 # LOAD SETTINGS
@@ -126,8 +126,8 @@ ynh_script_progression --message="Upgrading dependencies..." --time --weight=1
 
 ynh_install_app_dependencies $pkg_dependencies
 
-ynh_install_nodejs --nodejs_version=$nodejs_version
-ynh_use_nodejs
+EXPERIMENTAL_ynh_install_nodejs --nodejs_version=$nodejs_version
+EXPERIMENTAL_ynh_use_nodejs
 
 #=================================================
 # CREATE DEDICATED USER