I have installed the app, and it is very interesting. I have connected a flashdrive (Fat 32) with audio files to my Fiberhome router USB port. I would like to access the files on my Android (Nougat 7.1) smartphone via my home network. With the Fing app I went to the menu "Find open ports" (21 ftp). Now I try to connect with FTP client, and need an Authentication (Username: Password:) Whatever I try to type in there, it simply won't work.
Could you please explain to me what kind of username/password I need to fill in? Is it the username/password from my router or anything else?