APM page cannot be displayed...

In the access policy configuration properties, on the "SSO / Auth Domains" tab, you should see three check boxes in the "Cookie Options" section.

The Secure option sets the secure flag in the Set-Cookie header to the client. This tells the browser to only send the cookie back in a secure communication (vi HTTPS).

The HTTP Only option sets the httponly flag in the Set-Cookie header to the client. This tells the browser to not allow script-based access to cookies, and can help prevent (slow down) some cross-site scripting attacks.

The Persistent option sets the expires flag in the Set-Cookie header to the client and includes a date/time value. This causes the browser to store the cookie in the file system. If the option is not checked, the cookie is "session-based" and only resides in browser memory and is deleted when the browser closes.

Now that I'm thinking about though, you're not closing the browser between sessions, so it's probably not a cookie thing. What you want to see in the capture is anything anomalous. I can't really say what that is until you've tried it. Also, do you see anything odd in the APM logs?