diff --git a/functions.php b/functions.php
index 54cee24..9ab7a3a 100644
--- a/functions.php
+++ b/functions.php
@@ -209,7 +209,7 @@ function openmamba_download_func( $atts ) {
          if (strpos(";".$a['archs'].";",$currarch) == false) continue;
          $ret .= openmamba_download_link($milestone,$medium,$currarch,$ext,$langs[$outputlang],$outputlang);
       }
-      $out .= "";
+      $out = "";
       foreach ($langs as $l => $lang) {
          if ($l == $outputlang) continue;
          reset($archname);
@@ -451,7 +451,7 @@ function user_registration_filter($user_id, $email) {
    if ($user_id == false) {
       $e1 = explode("@", $email);
       if (in_array($e1[1], array(
-         'xtra.ltd','tmobile.agency','btee.online','verizonconnect.online',
+         'xtra.ltd','tmobile.agency','btee.online','verizonconnect.online','proton.me',
          'eduonline.digital','vofadonepro.online','tasktracker.in'))) {
          error_log( "user_registration_filter: email=" . $email . " blacklisted domain=" . $e1[1] );
          $user_id = 100;