I just downloaded this app, but when I use it on the customize section of the update button it doesn’t work. I really really need a solution 
You need to provide more information. What do you mean “it doesn’t work?” What exactly did you do and what exactly happened? Did you receive any error messages? Vague statements are not helpful for troubleshooting. And please edit your title to reflect the actual problem. A title that asks if anyone has a solution to an unknown problem will not attract the attention of anyone who can help.
I had the same problem and now its ok. What i did?
Go to settings (on Windows 10) then Applications and find Microsoft Edge and then Modified (start download-install Edge again.
I did the same for WebView2 and now is ok.
Hope to help