diff --git a/acme.sh b/acme.sh
index 72d0e2af..a69d4bb0 100755
--- a/acme.sh
+++ b/acme.sh
@@ -4100,13 +4100,15 @@ $_authorizations_map"
     fi
     if [ "$code" != "200" ]; then
       _err "Sign failed, code is not 200."
+      _err "$response"
       _on_issue_err "$_post_hook"
       return 1
     fi
     Le_LinkCert="$(echo "$response" | tr -d '\r\n' | _egrep_o '"certificate" *: *"[^"]*"' | cut -d '"' -f 4)"
 
     if ! _get "$Le_LinkCert" >"$CERT_PATH"; then
-      _err "Sign failed, code is not 200."
+      _err "Sign failed, can not download cert:$Le_LinkCert."
+      _err "$response"
       _on_issue_err "$_post_hook"
       return 1
     fi
diff --git a/dnsapi/dns_freedns.sh b/dnsapi/dns_freedns.sh
index 0d8fae73..7262755e 100755
--- a/dnsapi/dns_freedns.sh
+++ b/dnsapi/dns_freedns.sh
@@ -279,7 +279,7 @@ _freedns_add_txt_record() {
   domain_id="$2"
   subdomain="$3"
   value="$(printf '%s' "$4" | _url_encode)"
-  url="http://freedns.afraid.org/subdomain/save.php?step=2"
+  url="https://freedns.afraid.org/subdomain/save.php?step=2"
 
   htmlpage="$(_post "type=TXT&domain_id=$domain_id&subdomain=$subdomain&address=%22$value%22&send=Save%21" "$url")"