Why is there no Support for BaseApp?
BaseApp is no longer under active development (excluding critical bug fixes) and available for free on the Mac App Store, or as a direct download.
Customers who have purchased a BaseApp license are eligible for limited support.
Why is the Basecamp activity not limited to items I’m subscribed to?
The Basecamp API provided by 37 Signals currently doesn’t return a subscribed only feed.
How can I prevent Basecamp projects from showing up in BaseApp?
You can remove Basecamp projects from the BaseApp drop-down by disabling them individually in Preferences > Accounts.