diff --git a/README.md b/README.md
index 910c179..e65df94 100644
--- a/README.md
+++ b/README.md
@@ -47,11 +47,12 @@ Everytime the webpage load it will first get the New/Full moon dates from the AP
 
 1. clone the repository
 2. install requirements `pip install -r requirements.txt`
-3. create a file with name `.env` in the root folder containing the `ftp` logs, like this
+3. install lftp `sudo apt install lftp`
+4. create a file with name `.env` in the root folder containing the `ftp` logs, like this
 ```bash
-$HOST       =   ""
-$USERNAME   =   ""
-$PASSWORD   =   ""
+FTP_HOST=""
+FTP_USERNAME=""
+FTP_PASSWORD=""
 ```
 
 ### For every updates of the website
@@ -59,7 +60,7 @@ $PASSWORD   =   ""
 1. make your edits to the `content/` folder
 2. `add`, `commit` and `push` your changes to the directory
 3. open a terminal in the root folder of this project and launch the `pelican` command to regenerate
-4. launch `sync.sh`
+4. launch `./sync.sh`
 
 If a change don't appear immediatly it's possible you have to hard refresh using `ctrl`+`shift`+`r`.
 
diff --git a/sync.sh b/sync.sh
index 3707d2d..9061726 100644
--- a/sync.sh
+++ b/sync.sh
@@ -1,6 +1,20 @@
-if [ ! -f .env ]
+#!/usr/bin/env bash
+
+# get variable from .env file
+if [ -f .env ]
 then
   export $(cat .env | xargs)
 fi
 
-lftp -e "open $HOST; user $USERNAME $PASSWORD; mirror -Rnev --ignore-time --parallel=10 ./output  /www/moonwalks.be/ ;"
\ No newline at end of file
+
+# https://lftp.yar.ru/lftp-man.html
+
+# -R,      --reverse                  reverse mirror (put files)
+# -n,      --only-newer               download only newer files (-c won't work)
+# -e,      --delete                   delete files not present at the source
+# -v,      --verbose[=level]          verbose operation
+
+# --parallel[=N]             download N files in parallel
+# note: the number of maximum parallels connections accepted by the ftp can vary, if you get an error reduce it.
+
+lftp -e "set ssl:verify-certificate false; open $FTP_HOST; user $FTP_USERNAME $FTP_PASSWORD; mirror -Rnev --ignore-time --parallel=4 ./output  /www/moonwalks.be ; bye"
\ No newline at end of file
diff --git a/theme/static/fonts/Symbola.otf b/theme/static/fonts/Symbola.otf
deleted file mode 100644
index bbd5f85..0000000
Binary files a/theme/static/fonts/Symbola.otf and /dev/null differ