The second gives you a list of files and locations related to the app you want to install. The first command is to gain root privileges in the terminal in order for the find command to be able to search your whole file system. In my case, I achieved this in the terminal emulator with the commands suįind / -name '**'
The first thing I did was to spot all files associated to the app I couldn't install. I also have the 'BusyBox' app installed which might be necessary to use the terminal emulator properly. The solution that worked for me requires the device to be rooted, 'Terminal Emulator' app and a file manager that can access to your whole file system (like 'Root Browser').