1. I know it's terrible and annoying to get this message over and over again when trying to use your Hikvision DVR, believe me I've been there and I know exactly the way it feels like, but you just need to work on two simple configuration to solve this problem, So, let's jump into this now.
2. Software Description: Search Active Devices Protocol software is user-friendly and installation-free online device search tool for Mac OS. It searches online devices within your subnet and displays the information of the devices. Using the software, you can also modify the basic network information including IP address, subnet mask, gateway, etc. Attention: Supprt Mac OS 10.10 and above version.

1. Hikvision Safari Plugin

Openssl tool. The web plugin does not work with many internet browsers anymore, ever since certain protocols have become unsupported. The only way I can get the plugin working is to use Microsoft Internet Explorer (11.124), which is probably not that useful for considering you are a MAC user!

Hikvision Safari Plugin