My client also has this problem. I think ivms 4200 lite is no longer supported by Hikvision Cloud ( hik-connect) anymore, because , on the hikvision website, ivms 4200 series only has 3 versions now for pc : iVMS4200 V3.1.1.13, iVMS4200 VS V1.0.0.13, iVMS4200 AC V1.0.1.13.