Website showing that I'm connected when I'm not (cache)

EDIT: I think it’s because “Don’t Cache Pages for Logged in Users” is enabled, and because it use the last user cache, it may show when I was connected… the problem is that I already added my page on “never cache” (connexion/*)

Hi,

First I apologize for my english, i’m French.

So, the problem that occur on my website is that when I click on “connexion” to connect myself on my user account, instead of showing me the connexion form it shows me the information of my account like :

“Connected as
MyAccount
Account status
Active
Membership
admin”
…

I also have a disconnect button on the same page
(http://www.freedom-substitute.fr/connexion/?swpm-logout=true)
but even when I click on it, I still see the same page when coming back on connexion!

→ I already tried to purge the page from the CDN
→ I already deleted all cookies / cache from my browser
→ Already tried on different PC, Phone and navigator (even Tor Browser)

And I still see the same page showing to everyone that he’s connected on my account… So when this occur I have to connect to my admin account (the one provided with my host) to clear the cache.

Here is a screen of what I see : http://img15.hostingpics.net/pics/602738wordpressBug.png

Here’s a list of the extensions that may trigger this bugs :
→ W3 Total Cache
→ Simple WordPress Membership

I think that the problem might come from W3 Total Cache because when I clear the cache I can see again the connexion form on my phone, what is weird is that I already added “http://www.freedom-substitute.fr/connexion/” on the “No cache for theses pages”

likewise for the disconnect button:
“http://www.freedom-substitute.fr/wp-login.php?action=logout&redirect_to=index.php&_wpnonce=ead0967ba5”

So, what can I do about this? Is there a way to clear the cash on specifics pages automatically when disconnecting or after a few minutes?

Regards