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.
#5443 - Forced email and web notification when staff edit a member's notification settings
Actually enable_notifications and disable_notifications were very confusing for API names because enable_notifications could disable them, and disable_notifications really means "reset to default".
I went the route of treating notification edits as high-impact changes. They will be sent out just like high-impact changes for username, password, etc.
I renamed these API calls as follows:
enable_notifications -> set_notifications
disable_notifications -> reset_notifications