As announced in the Release Notes for Jive 5, Private Messages and the Jotlet.net Calendar Widget were deprecated as of Jive 5.0. As a reminder, when the next major version of Jive is shipped next year we will discontinue support of these features. Please note that by default, Private Messages are deactivated for Jive 5 communities as Direct Messages is a suitable and supported alternative. If you have any questions related to your current Jive deployment and how this announcement may impact you please contact Support or your account manager.
Jive Product Management