Problems with captcha protecting the admin panel
The captcha that protects admin panels from bots is based on PHP sessions. If the captcha letters are not displayed when you go to the admin panel, there may be several possible reasons: 1. The disk space limit has been exceeded or exhausted. In this case, it is impossible to create new files and session files in particular, which results in non-functional sessions and captchas. Free up disk space or buy disk space. 2. The mod-tmp system directory is missing (removed) from the root of your web space. As a result, the work of sessions on your sites is damaged, and the captcha is not displayed. To restore the work of sessions and, accordingly, captcha, create a mod-tmp directory in the root of your web space. 3. PHP support is not enabled in the WWW domain properties. Go to the WWW domains section, double-click on the problem domain, enable PHP “As apache module” and the captcha will work correctly. If the captcha is displayed, but when entered correctly it returns to the captcha page, most likely, the IP of your site is not included in the mod_realip list. Contact technical support