To download Screen Stream over HTTP for PC, head over to the Google playstore and search for "Screen Stream over HTTP". You should see the app icon under "Installed apps" in the app drawer. Click on it and you should be able to use it just like on your smartphone. If you don't want to download it through the Google Playstore, you can install it through an emulator like MemuPlay. Simply double click on the apk file and follow the installation instructions.
After downloading the app, launch it. In the search results, you should find a "Screen Stream over HTTP" icon. You can also choose a "Screen Sync" button. Select "Start" and follow the directions provided by the software. When you are done, tap the Start button and accept all the necessary permissions. After installation, screen streaming will automatically begin. You can switch between devices using the option available in the toolbar.
Alternatively, you can download the offline installer from the Bluestacks app store. It's easy to install, but it may take a while to complete the installation. Once you've installed it, you can search for apps by entering "screen stream" in the search bar. If you're looking for a mod version of the app, you can select the "Install APK" option at the bottom of the home screen.