diff --git a/conf/.env b/conf/.env
index 733aafd..58d981c 100644
--- a/conf/.env
+++ b/conf/.env
@@ -237,6 +237,5 @@ APP_NAME=DataImporter
 # Don't open issues telling me it doesn't help because it's not supposed to.
 # Laravel uses this to generate links on the command line, which is a feature the data importer does not use.
 #
-APP_URL=http://localhost
-
+APP_URL=https://__DOMAIN____PATH__
 
diff --git a/conf/nginx.conf b/conf/nginx.conf
index db6b0ba..a0f22b8 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -23,6 +23,13 @@ location __PATH__/ {
     fastcgi_param REMOTE_USER $remote_user;
     fastcgi_param PATH_INFO $fastcgi_path_info;
     fastcgi_param SCRIPT_FILENAME $request_filename;
+
+    ################################
+    # These should be tuned, but the authentication callback doesn't work without then
+    ################################
+    fastcgi_buffers 16 32k;
+    fastcgi_buffer_size 64k;
+    fastcgi_busy_buffers_size 64k;
   }
 
   # Include SSOWAT user panel.
diff --git a/config_panel.toml b/config_panel.toml
index 91544b7..bf6428c 100644
--- a/config_panel.toml
+++ b/config_panel.toml
@@ -29,11 +29,3 @@ name = "Firefly-iii Data Importer configuration"
         default = "low"
         help = "low: Personal usage, behind the SSO. No RAM footprint when not used, but the impact on the processor can be high if many users are using the service.<br>medium: Low usage, few people or/and publicly accessible. Low RAM footprint, medium processor footprint when used.<br>high: High usage, frequently visited website. High RAM footprint, but lower on processor usage and quickly responding."
 
-[env]
-name = "Environment configuration"
-    [env.env_config]
-        [env.env_config.env_file]
-        ask = "Environment variables"
-        type = "text"
-        bind = "/var/www/__APP__/.env"
-
diff --git a/manifest.toml b/manifest.toml
index b4d3820..b8026a6 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -34,7 +34,7 @@ ram.runtime = "50M"
 
     [install.init_main_permission]
     type = "group"
-    default = "all_users"
+    default = "admins"
 
     [install.admin]
     type = "user"
@@ -53,5 +53,5 @@ ram.runtime = "50M"
     main.url = "/"
 
     [resources.apt]
-    packages = "php8.2-bcmath"
+    packages = "php8.2-xml php8.2-bcmath"
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 31fae1d..6e8ee3c 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -86,16 +86,6 @@ ynh_script_progression --message="Updating PHP dependencies..."
 
 ynh_exec_warn_less ynh_install_composer
 
-#=================================================
-# UPDATE A CONFIG FILE
-#=================================================
-# ynh_script_progression --message="Updating a configuration file..."
-
-# ynh_add_config --template="../conf/.env" --destination="$install_dir/.env"
-
-# chmod 400 "$install_dir/.env"
-# chown $app "$install_dir/.env"
-
 #=================================================
 # END OF SCRIPT
 #=================================================