edit

src/Applet.php

@@ -168,7 +168,7 @@ class Applet extends Base
                 $update['bind'] = 1;
                 $update['where_id'] = $uid;
                 $name = '商城会员' . substr($mobile, -5);
-                if (!$info['username']) {
+                if (!$info['username'] || strstr($info['username'], 'G')) {
                     $info['username'] = $name;
                 }
                 Dever::db('passport/user')->update($update);