XF 1.5 XenForo disconnects me continually with Firefox

[SimonaB]

Hello and thank you right now who can i help.
I recently installed xenForo in my forum (for Vbulletin) but unfortunately matched by an annoying problem.
Every time I try to edit a post by a user, the I "forum disconnects." Administration side instead connected rest. How can I fix? Thank you.

 

[Paul B]

Can you clarify what you mean by 'forum disconnects'?
Do you mean you are being logged out?

One of the first things to note is that your site is available at www and non-www.
Although this may not be the cause of the issue, it's definitely something you need to rectify.
See point 19 of the FAQ for how to do that: https://xenforo.com/community/threads/frequently-asked-questions.5183/#post-180456

Once you've done that, check whether the issue still happens.
If it does, can you provide some more details, such as any error messages, what pages are presented, etc.