On March 20, we fixed a few security errors for all ISPsystem control panels. Starting from version 5.194.1, all control panels no longer support operation via the HTTP protocol. We implemented it to avoid risks of unauthorized access and protect user data.
Now, when you go to the panel interface via HTTP, you will still see the login form but nothing will happen after you have entered your login and password. To be able to finish authorization, you need to change HTTP to HTTPS in the control panel address. These changes will also affect API calls.
We are going to release redirection from HTTP to HTTPS soon.
A control panel will create a self-signed certificate right after it’s installed on a server so it will be available via HTTPS even if you haven’t added any SSL.