Can't get this to work at all about certbot-he-hook HOT 2 OPEN

diff --git a/certbot-he-hook.sh b/certbot-he-hook.sh
index f65a761..1eae4aa 100755
--- a/certbot-he-hook.sh
+++ b/certbot-he-hook.sh
@@ -56,7 +56,7 @@ if [ -n "$HE_USER" ] && [ -n "$HE_PASS" ]; then
   HE_COOKIE=$( \
     curl -L --silent --show-error -I "https://dns.he.net/" \
       | grep '^Set-Cookie:' \
-      | grep -Eo 'CGISESSID=[a-z0-9]*')
+      | grep -Eo '[a-z0-9]*=[a-z0-9]*' | head -n1)
   # Attempt login
   curl -L --silent --show-error --cookie "$HE_COOKIE" \
     --form "email=${HE_USER}" \
@@ -92,11 +92,10 @@ STRIP_COUNTER=1
 # Walk through all possible zone names
 while true; do
   ATTEMPTED_ZONE=$(echo "$CERTBOT_DOMAIN" | cut -d . -f ${STRIP_COUNTER}-)
-
   # All possible zone names have been tried
   if [ -z "$ATTEMPTED_ZONE" ]; then
     echo "No zone for domain \"$DOMAIN\" found." 1>&2
-    return 1
+    break
   fi

   # Take care of "." and only match whole lines. Note that grep -F