First you open your Steemit, log in, after you log in to wallet as shown below:
after entering steemit you select wallet, and follow the steps like this picture
copy the password that is there, if possible the top password because it might be a valid password, after that please open Dtube friends
enter dtube and fill in your steemit username, in the password fill in the password that your friends have steemit, and log in if you try to make friends like one video that you like, if you can mean friends can insert a video again
Good luck, good luck