SADPTool at least is worth downloading from Hikvision's support website. It's a small utility which, when opened, will list all your IP devices with their IP address, serial number and firmware (software) version , which are worth noting down and keeping safe. It can also be used to modify some of your camera's key parameters.
But if you already know your camera's IP address and password, it should be plain sailing. I'm guessing that the HiLookVision software asks you to create a password - just for the software - the first time you launch it. After that it will ask for that password every time you open it - unless you dig into the settings and instruct it to Auto-login.
So you should probably have a password for the camera, a password for the software and a password for Hik-Connect if that is what you are using on your phone. Note them down and keep them somewhere you can easily find them again.
Once you have got the software open, you presumably may have to add your camera to it (unless it auto-scans for your devices). In the Device Configuration tab (if that's what they call it), click the Add button and enter the camera's IP address and password. You may then have to hit another button to Activate the camera. Then go to the Live View tab, find your camera in the sidebar and click on it (or drag it into the viewing window). You will hopefully then have what you desire.