We are currently recommending against upgrading to iOS 11.3. We have identified an issue in the Apple update that is causing the application to need to be restarted after being sent to the background. We anticipate needing to release a new client to remedy. We will update as we have more information.
UPDATE - The updated version of the IQMax Mobile Application has been published to the App Store and resolves the issues related to the iOS 11.3 update.