Get back to your row
Paste the key you were given when you connected your first bank. It puts your row back in this browser, with every bank still attached.
No key? Then this row can only be reached from the browser you made it in. If you still have that browser, open your row there and make a key. If you do not, nothing can be done for it: the whole of your identity here is a cookie and a key, which is also why we never asked for an email address. Back to the board.