Email before download

I think what you’re doing is trying to change the file URL in the Download Monitor plugin for a file that you uploaded. I think you are misunderstanding how that works. When you upload a file in Download Monitor, the file gets stored in the filesystem of your server and there is a URL that will download that file if you put the URL in a browser. THAT is the URL in that field that you are changing. So, you’re basically putting a URL to one of your webpages into the field that Download Monitor thinks it should use to allow a visitor to download a file. Thus, that’s not what that URL field is for. It doesn’t work like that.

I suggest you not use EBD (and Download Monitor) for what you are trying to do. If you just want to get a user’s email address & name & send them to another page you should use something else. Some sort of form plugin perhaps or other plugins that get a user’s email address perhaps. This setup is specifically for downloading files, not going to webpages.