Yes, have done that per my note above. Setup a local ip on both phones. My S8 is now working fine.
My Galaxy S6 however, will not work on iVMS-4500. OpenVPN connects just fine. On the iVMS-4500 I performed the exact same device setup, when I save the device it recognizes that I have 7 cameras so no issues with IP address or password.
However, when I click on Live View, I get the spinning circle for about a minute, then eventually an "error 8200" code shows up.
Have tried reinstalling iVMS-4500 on that particular phone, didn't work.
Another thing I've seen is to disable "video encryption" on the NVR, but I don't see that option anywhere on my Hik 7616. Plus, it's odd that it works on one phone, and not the other?
Kind of useless if I can't use the phone app to view. Maybe I'll try another app in the mean time like TinyCam, but would like to get this to work somehow on iVMS-4500 as I find that app to be the best to simply view cameras live.
Edit: Found the video encryption setting in the NVR, it was already disabled so that's not causing the 8200 error on my wife's phone.