Your company has upgraded to the latest version of 3CX Phone System v15.
Updates to the 3CX client for iOS are deployed automatically through the Apple App store. When a new update is available on the 3CX Website the App store will detect the newer version of the client online. For this to take place the automatic update must be activated.
Once you accept the update, the downloader will start and download the updated version for the 3CX client for iOS. After the file has finished downloading, the 3CX client will restart on its own to complete the update.
Upon startup it will configure itself automatically based on the configurations you had previously.