Oh, okay. Thank you for clarifying. When you see the spinning wheels or “Loading” message it doesn’t go away it is best to check your PHP error log to see relevant errors there. Could you do that and report on what you find? Depending on your installation you may need your systems administrator to access it. We provide some advice for how to go about checking PHP error logs here: How do I find my PHP error log?
Best regards,
Roger
PKP Team