logged in Users are logged out when redirecting to homepage

Hi, we have installed this plugin because our Hoster said we should, we are using Nginx (Proxy) mit Apache/PHP Setup. We do have a specific user Role called Summit-Book-User and there is a behavor we have only when the cache Plugin is installed and active. When a summit user is logged in and clicks on the home button then the summit user is logged out. We tryed different kinds of settings, Logged-in Users Don’t show the cached version for logged-in users, this one also did not have any effect. What is odd is also that it behaves not exactly the same for any user. Sometimes it works fine and others it does not work. But one thing we are sure about is that it is only happening with this cache Plugin. Can you provide help in finding the right setting or should we change something in the Plugin we programmed?

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