If you need help with one of our apps, don't hesitate to contact us via email. You will receive a response within 48 hours. You can also get support on Twitter (@devifydk), just hit us with a reply.
Please see the Support and Help page for Collection to see if your questions are answered there. If not, then contact us by sending a support email.
We also have a Twitter account dedicated to Collection-related messages: @collectionapp.