diff --git a/conf/rtorrent.rc b/conf/rtorrent.rc
index d770007..ef1602f 100644
--- a/conf/rtorrent.rc
+++ b/conf/rtorrent.rc
@@ -15,6 +15,8 @@ directory.default.set = (cat,(cfg.basedir),"download")
 
 schedule = watch_directory,5,5,((load.start,(cat,(cfg.watch),"*.torrent")))
 
+#system.umask.set = 0000
+
 ### BitTorrent
 # Global upload and download rate in KiB, `0` for unlimited
 throttle.global_down.max_rate.set = 0
diff --git a/scripts/rtadduser b/scripts/rtadduser
index 2fb39e6..7bffb95 100755
--- a/scripts/rtadduser
+++ b/scripts/rtadduser
@@ -22,8 +22,9 @@ sshport=$(grep 'Port ' /etc/ssh/sshd_config | sed 's/[^0-9]*//g')
 ftpport=$(grep 'listen_port=' /etc/vsftpd.conf | sed 's/[^0-9]*//g')
 cronline1="@reboot sleep 10; /usr/local/bin/rtcheck irssi rtorrent"
 cronline2="*/10 * * * * /usr/local/bin/rtcheck irssi rtorrent"
-serverip=$(ip route get 8.8.8.8 | awk 'NR==1 {print $NF}')
+serverip=$(ip route get 8.8.8.8 | awk 'NR==1 {print $7}')
 check_ssh=1
+rtdstatus=$(rtdload)
 
 #get user list
 cd /var/www/rutorrent/conf/users
@@ -33,6 +34,28 @@ user_list=*
 ### FUNCTIONS ###
 ###############################
 
+#function to determin if unix user name is valid
+valid_name(){
+    until [[ $user =~ ^[a-z][-a-z0-9_]{2,31}$ ]]
+      do
+        echo "Enter user name (lowercase, numbers, dash and underscore):"
+        read user
+      done
+}
+
+# function to ask user for y/n response
+ask_user(){
+local answer
+while true
+  do
+    read answer
+    case $answer in [Yy]* ) return 0 ;;
+                    [Nn]* ) return 1 ;;
+                        * ) echo "Enter y or n";;
+    esac
+  done
+}
+
 genpasswd() {
 local genln=$1
 [ -z "$genln" ] && genln=8
@@ -183,34 +206,39 @@ fi
 ###############################
 
 if [ -z "$user" ]; then
-  echo "Enter the name of the user to add"
+  echo "Enter the name of the user"
   echo "It can be an existing user or a new user"
   echo
-
   confirm_name=1
   while [ $confirm_name = 1 ]
     do
-      read -p "Enter user name: " answer
-      addname=$answer
-      check_name=1
-      if [ "$addname" = "root" ]; then
-        echo "Cannot create root"
-        exit
+      valid_name
+      echo -n "Confirm that user name is $user y/n? "
+      if ask_user; then
+        confirm_name=0
+      else
+        user=''
       fi
-
-      while [ $check_name = 1 ]
-        do
-          read -p "Is $addname correct? " answer
-          case $answer in [Yy]* ) confirm_name=0 && check_name=0  ;;
-                          [Nn]* ) confirm_name=1 && check_name=0  ;;
-                              * ) echo "Enter y or n";;
-          esac
-        done
     done
-
-  user=$addname
+else
+  if ! [[ $user =~ ^[a-z][-a-z0-9_]{2,31}$ ]]; then
+    echo "$user is not a valid user name please enter again"
+    confirm_name=1
+    while [ $confirm_name = 1 ]
+      do
+        valid_name
+        echo -n "Confirm that user name is $user y/n? "
+        if ask_user; then
+          confirm_name=0
+        else
+          user=''
+        fi
+      done
+  fi
 fi
 
+echo "User name is $user"
+
 if id -u $user >/dev/null 2>&1; then
   echo "$user already exists"
 else
@@ -220,6 +248,13 @@ else
     adduser --gecos "" $user --disabled-password
     echo "$user:$unixpass" | sudo chpasswd
   fi
+
+  if id -u $user >/dev/null 2>&1; then
+    echo "$user successfully created"
+  else
+    echo "create user failed - exiting process"
+    exit 1
+  fi
 fi
 
 home=$(eval echo "~$user")
@@ -363,14 +398,6 @@ fi
 su $user -c '/usr/local/bin/rt restart'
 su $user -c '/usr/local/bin/rt -i restart'
 
-dload_line=$(grep "include /etc/nginx/conf.d/rtdload;" /etc/nginx/sites-available/default)
-dload_hash=$(echo $dload_line | sed 's/[^#]*//g')
-if [ ! -z "$dload_line" -a -z "$dload_hash" ]; then
-dload_flag=0
-else
-dload_flag=1
-fi
-
 echo "$user setup complete"
 echo "SCGI Port: $newscgi"
 echo "RPC Mount: $newrpc"
@@ -391,7 +418,7 @@ echo
 fi
 echo "ftp client should be set to explicit ftp over tls using port $ftpport" | tee -a $home/rtinst.info
 echo
-if [ $dload_flag = 0 ]; then
+if [ "$rtdstatus" = "enabled" ]; then
 echo "https downloads can be accessed at https://$serverip/download/$user" | tee -a $home/rtinst.info
 echo
 fi
diff --git a/scripts/rtinst b/scripts/rtinst
index ac37397..2d009ab 100755
--- a/scripts/rtinst
+++ b/scripts/rtinst
@@ -133,6 +133,18 @@ else
 fi
 }
 
+#function to determin if unix user name is valid
+valid_name(){
+    until [[ $user =~ ^[a-z][-a-z0-9_]{2,31}$ ]]
+      do
+        echo "Enter user name (lowercase, numbers, dash and underscore):"
+        read user
+      done
+}
+
+
+
+
 #function to generate random password
 genpasswd() {
 local genln=$1
@@ -379,25 +391,39 @@ if [ -z "$user" ]; then
     echo "This will be your primary user"
     echo "It can be an existing user or a new user"
     echo
-
     confirm_name=1
     while [ $confirm_name = 1 ]
       do
-        read -p "Enter user name: " answer
-        addname=$answer
-        echo -n "Confirm that user name is $answer y/n? "
+        valid_name
+        echo -n "Confirm that user name is $user y/n? "
         if ask_user; then
           confirm_name=0
+        else
+          user=''
         fi
       done
-
-    user=$addname
-
   else
     user=$SUDO_USER
   fi
+else
+  if ! [[ $user =~ ^[a-z][-a-z0-9_]{2,31}$ ]]; then
+    echo "$user is not a valid user name please enter again"
+    confirm_name=1
+    while [ $confirm_name = 1 ]
+      do
+        valid_name
+        echo -n "Confirm that user name is $user y/n? "
+        if ask_user; then
+          confirm_name=0
+        else
+          user=''
+        fi
+      done
+  fi
 fi
 
+echo "User name is $user"
+
 if id -u $user >/dev/null 2>&1; then
   echo "$user already exists"
 else
@@ -407,6 +433,14 @@ else
     adduser --gecos "" $user --disabled-password
     echo "$user:$unixpass" | chpasswd
   fi
+
+  if id -u $user >/dev/null 2>&1; then
+    echo "$user successfully created"
+  else
+    echo "create user failed - exiting process"
+    exit 1
+  fi
+
 fi
 
 home=$(eval echo "~$user")
diff --git a/scripts/rtletsencrypt b/scripts/rtletsencrypt
index ba8b7ea..2dbe573 100755
--- a/scripts/rtletsencrypt
+++ b/scripts/rtletsencrypt
@@ -62,7 +62,8 @@ if [ $(dpkg-query -W -f='${Status}' "certbot" 2>/dev/null | grep -c "ok installe
     apt-get -q update >> $logfile 2>&1
     apt-get install -y certbot python-certbot-nginx >> $logfile 2>&1
   else
-    grep "^deb http\:\/\/deb\.debian\.org\/debian stretch-backports main" /etc/apt/sources.list > /dev/null || echo "deb http://deb.debian.org/debian stretch-backports main" >> /etc/apt/sources.list
+    deb_name=$(lsb_release --codename --short)
+    grep "^deb http\:\/\/deb\.debian\.org\/debian $deb_name-backports main" /etc/apt/sources.list > /dev/null || echo "deb http://deb.debian.org/debian $deb_name-backports main" >> /etc/apt/sources.list
     apt-get -q update >> $logfile 2>&1
     apt-get install -y certbot python-certbot-nginx -t stretch-backports >> $logfile 2>&1
   fi