Hello everyone!

I've been trying to undelegate my SP from minnowbooster, but I haven't managed to get it anywhere. I've tried the following steps..

I click the link where I sign in and enter my details..

And then I'm greeted by this wonderful error message. :(

Does anyone have any idea what should I do? Thank you in advance.

EDIT: Also, how do I figure out who I delegated SP to? I think it's minnowbooster but I might have forgotten.

EDIT #2: It's actually the steem official account which is my delegator.. Is it possible that I can undelegate from it?