Great to hear this and i am glad that you are using cayenne platform.
we have a couple of updates for the app which will be launched in upcoming days which should solve most of your problems.
all this bugs shall be fixed in upcoming release of app and fixes for dashboard.
it is on roadmap, but will take time to release. we have a couple of cool releases and fixes before that. so stay on for it.
you can try something like this till we have an offical release for camera. Take picture when motion with Pi 3 and Agent 2.0 CayenneMQTTClient() and notify by email - how to trigger a script on Pi 3