Hikvision has changed the app used to access cameras on a phone.
For iPhone - Hik Connect
For Android - Guarding Vision (see attached document walking through setting up this app)
Once the app is downloaded and open, you will skip / X out of any screens asking to log in.
Select the + in the upper right corner to add a device.
Select 'add device manually'
Make sure IP/Domain is selected and enter the info given to you.