I’m pretty sure that our hosting is not “bugged”. After all, your WordPress website is pretty much self-contained, and doesn’t really rely on any specific hosting functionality to work.
Generally speaking, when installing WordPress, you need to enter an administrator username and password. After WordPress has been installed, you can navigate to http://[your website URL]/wp-admin/, and login with the admin username and password you entered during installation. Please note that these admin details are probably different from your InfinityFree client area or hosting account credentials.
I’m not sure what you mean by “edit your website through InfinityFree” as managing WordPress is something you can only do through WordPress.
One possible explanation to comes to mind is that you used our website builder after installing WordPress, which has now replaced your WordPress site. If so, please follow this guide to revert this: How to delete a site.pro installation and restore your previous website
Besides that, if you want more specific information to your situation, please provide more information about the situation. Like the URL of your website, as well as any error messages you get.