great plugin but has some errors and issues

It’s a great little plugin that does exactly what I need and is worth supporting. The trouble is just some errors:

(1) It returns a PHP error “Undefined array key ‘s'” located in democracy-poll/classes/Admin/List_Table_Polls.php:40; and

(2) More importantly, Wordfence classified it on 29 April 2024 (updated 7 May 2024) as having a critical security vulnerability. They write: “The Democracy Poll plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to, and including, 6.0.3. This makes it possible for unauthenticated attackers to perform an unauthorized action.”