Hi luna624
Below is a method you can use to associate a file with an app.

1. Left click on file icon once to highlight
2. Press and hold the Shift key and then Right click once on this same icon
You should now see a dialogue box that has “Open With” as one of the options, pick this option
3. Now you should see an “Open With” window with your choice of apps. to use. Pick your app of choice AND also see the box below the app. window that allows you to always associate this app with that file or if unchecked just this one time. You can use this to change the default app. as well. Hope this helps

Bob C