How to assign a file extention to an installed app ?

[AC Question]

Hi, I have torrent files on my phone and have a torrent app. Whenever I go to the file manager and click on it I get this message ( Unable to open file,you don't have any apps that can open this file please search for one on Play Store)

But I do have this app that can open it.

This problem occured after I reset the defaults for the browser I downloaded it from and the torrent app. how do I match them up again ?

 

[anon(238680)]

Welcome to Android Central. Sorry, we don't support use of torrent or torrent files. You may receive more support from a torrent help site.