Please access the HTMTL-5 based web interface of the monitoring unit only with Google Chrome, Apple Safari or Mozilla Firefox. Please check also if you have installed the recommended Java plugin. Try to delete the rule created under "Logical scheme" using your non-supported web browser. You may need to restart the IT monitor device before doing that. If the created logic can not be deleted, please initiate a reset to the factory settings via the DIP switch or use the CPU tool contained in the firmware file. After the monitoring system has been returned to default factory settings, please use only Chrome, Safari or Firefox for it`s configuration. Your IP-based remote monitoring unit should then work properly as usual.