The "permit expiry date" is the date shown on the permit as the date at which the permit expires. Your municipality determines the permit validity period.
You can filter your permits using filter criteria like "Expired" or "Expires within one month" in the Cloudpermit dashboard.
When your permit runs out, contact your city's building department to find out what you need to do next. You may also need to submit a new application in Cloudpermit.
Use the "Message" feature in the header of your application workspace to get more information from your local building department.
You can send a "public" message to all stakeholders involved in the application and the building department. You can also select the recipient of a "direct" message from the list of current stakeholders in your application.
More information about the "Message" feature can be found here.