The reason you're experiencing a problem with Microsoft Edge is because this browser doesn't support Bookmarklets. There are some hacks that people have found, but they didn't work for me and I read that the one I was trying stopped working after the release last November. Someone else may have come up with another way round it, but really unless you're very technical I wouldn't attempt it.
I did have a Bookmarklet working in Edge - but that's only because my Favorites bar was imported from my Chrome settings. If you want to use the Bookmarklet - and even if you don't - I would suggest moving over to Chrome.
Sorry I can't do more.