Sort:  

correct password or key ( master or main password) to revoke it. And yes, I tried it and revoked vimm.app with that link, you can see the transaction of that action here:
@coininstant You need a https://steemd.com/tx/322a71289a9013023ca0872f83496a4154487574

Edit: revoked two apps without any problem.

Thanks, a light just went off in my head, I now understand what I have to do. I just paste my key in v2! Thanks, sometimes the simplest things get me. Will do it tonight and post my screenshots on my post!