After your first VPS order, we send out the address of the panel with the username and password. You can always find the address and username when you click Manage in the Service menu, there you can request a new password for the control panel too.
When you login to the VPS control panel, you have to choose Customer (Ügyfél) realm, and you have to fill out the username and password fields.
After login, enter the service ID without # character, only the numbers in the upper search field, there you can select your VPS server.
After you selected the VPS service, in the right upper corner you can find the Console button, where you can open noVNC, or xterm.js. noVNC is available for every VPS service, xterm.js only available with some operating system, for example Ubuntu, where you must use xterm.js instead of noVNC after the boot message.
On the noVNC console, in the middle of the left side you find a little arrow icon, under that you can find power functions under the power button, also under the A character button you can find some keyboard buttons like CTRL, ALT, Windows, TAB, ESC and CTRL-ALT-DEL combination that you can send to the VPS if needed.