We apologize for the instability of composr.app and appreciate your patience. We are working on the statistics addon and trying to find an optimal way to store and render data. Unfortunately, we have yet to find a solution that can handle the traffic (and therefore, tens of millions of statistical records) of composr.app. We're working hard on one.
#6092 - [beta6] Changing timezone in profile results in error
It works on my end. Can you comment the exact URL you are taken to after saving profile changes (minus the domain name if you don't want to include that)?
An error has occurred
The requested page (members) is missing.
Were you looking for members (In Site)?
You don't have single public zone enabled, do you?