Generally, once you click on this button, the page will turn into Microsoft Store and it will show you with this page.
You can see RecForth available on Hololens, PC, Mobile device, Hub. For a better recording experience, make sure you run RecForth with the right device. Tap the Blue Get button on the upright corner, then it will jump to the Microsoft Store page.
Now you can click the Install button to download and install it on your computer. Wait for a while, and a successful download will tell you that the download is complete.
Find RecForth and start it on your computer. Then you can launch RecForth and enter the following homepage just like this. You can start your recording journey now.