Hi
@Snaffy
it can be confusing sometimes and people often encounter problems if they try to add straight to Hik-connect out of the box.
We usually recommend that people set the camera up with a browser first, then add the device to the web portal, and you should then see the device on the Hik-connect app. The steps to do this are below:
1. Find the camera with SADP and make sure it is activated
2. Browse to the cameras IP address with Internet Explorer and login
3. Go to Configuration > Network > Advanced Settings > Platform access and make sure Hik-connect is enabled and a verification code is set (this can be the same as the cameras password although I don't think they will let you use special characters)
4. Login to the Hik-connect portal using the same login details you used on the app
5. Click add device and enter the cameras serial number
This will be why you were getting the error code when asked for the verification code as this is set by the user in the Platform access settings before you try and add it to the app.
Make sure before you try to add the device to the web portal that you have deleted any trace of the device from the Hik-connect app on your phone as it may not add if it thinks the device is already connected.