Issue with disappearing pages on WP site

Hi all! I have an issue with disappearing pages, whenever I create them. If I decide to edit them, instead of finding a list of existing pages, it is as if they are completely gone. Here’s the screenshot of my installed plugins, just in case someone might notice an app that makes this happening. Thanks bunches in advance (I have no idea what might be causing this, so any help would be appreciated)!

None of the plugin listed in screenshot are able to delete pages automatically from your website.
Please change your login password and login again and try to create a new page.