IVMS-4500 Push Notification Configuration Help Request for LAN/VPN Usage

Hello everyone,

Apologies for the long post, but I'm trying to be as informative/helpful as possible.
I have been trying for a while to set up push notifications on my Hikvision NVR without success.
All NVR management is done via the web interface.

NVR Details:
Model DS-7616NI-I2 / 16P
Firmware Version V4.1.50 build 180227
Encoding Version V5.0 build 180211
Web Version V4.0.1 build 180209
Plugin Version V3.0.6.36
Hard drive: 1x 4TB WD Purple

Camera Details:
model...

IVMS-4500 Push Notification Configuration Help Request for LAN/VPN Usage