Hey, guys.
Sorry to know you’re having issues. Can you tell me the PHP version you’re using?
Looking at the URL you gave, I saw there’s a PHP error “Fatal error: Call to undefined function visualCaptcha\mime_content_type() in [redacted]/wp-content/plugins/visualcaptcha/vendor/emotionloop/visualcaptcha/src/visualCaptcha/Captcha.php on line 262”.
mime_content_type(), however, should exist, if you’ve got PHP 5.3+ ( https://pt1.php.net/mime_content_type ).