Bottom of the page in your home section link to old control panel now showing. Click on the options (ignore link to new profile) and you can edit any old information. I was just able to fix my problem.
Certain lines on the main site profile couldn't be changed. There is no equivalent on the new profile page. One of those was "Interests". Whatever information you may have shared years ago, you could no longer change.
It was a problem because I'm no longer interested in those activities. And let's just leave it saying that created a VERY serious potential problem for me. And others.
There are multiple threads and posters on this forum complaining. And obviously the NEW link was set up by the admin for a reason.