Is your CCTV App Offline (but cameras are working on the monitor/TV)?
Mengatasi Hik-Connect yang Offline – Distributor Resmi CCTV Hikvision - Proview - Hilook - Dahua - Ezvi
Enable Guarding Vision Service on Device Web Page
Hik-Connect - Cameras getting Offline on Hik-Connect when using different wifi or mobile data | IP CCTV Forum for IP Video, network cameras & CCTV software