If you want to disable registration, but still allow users to log in, follow these steps. You can also leave a custom message for users.

To disable registrations, login as an Admin and go to this address

http://YOURSITEHERE.readingbydesign.org/admin/config/people/accounts

Set the "Who can register accounts?" option to "Administrators only" and click "Save Configuration at the bottom.

Next, go to

http://YOURSITEHERE.readingbydesign.org/admin/structure/block/manage/blo...

Click the "Disable rich text" link below the text entry box field to go into "code view."  Then delete everything in that text box.

If you want to leave a custom message, click the "Enable rich text" link below the text box to go back into normal view.  Type a message like "Registration is now closed!"

Scroll to the bottom of the page and click the "Save Block" button to save your changes.

Please note: it can take a few minutes for this to "take effect" since our websites are cached for non-logged-in visitors. So if you don't see the changes right away, come back in a few minutes and look again.