Dahua Push Notifications?

@EMPIRETECANDY my Android phone has worked perfectly but my wifes Iphone has received 2 notifications total in over a month. Appreciate any update or workaround you can offer.
 
Same version Tripwire alarm
 
Today we tested on the android phones, it's working, tomorrow i will try on the iphone.
 
I also need to know the push fail country from US only or has some other countries.
 
@EMPIRETECANDY the AI deterrent cam you sell 5MP - system version 2.800.000000.3.R, 2019-07-19, IPC-HDW1431s - 2.622.000000.31.R- 2018-08-13

NVR Model: DHI-NVR5216-16P-4k2SE, v4.000.000001.5, 12/18/2019
 
@EMPIRETECANDY the AI deterrent cam you sell 5MP - system version 2.800.000000.3.R, 2019-07-19, IPC-HDW1431s - 2.622.000000.31.R- 2018-08-13

NVR Model: DHI-NVR5216-16P-4k2SE, v4.000.000001.5, 12/18/2019
Firmware all too old, i will send you the latest new fw to flash. And then check again. Will send to you at hongkong morning time, 10hours later.
 
This setup works perfectly with Android Phone. Iphone worked perfectly until approx 10/3/2020. It seems like a coincidence that many Iphone users no longer work all about the same time which tends to point to the Iphone Dahua App/Platform as the issue and not firmware.

DHI-NVR5416-4KS2 V3.216.0000006.0, Build Date: 2019-02-23
IPC-HFW1831E V2.800.0000000.2.R, Build Date: 2019-04-04
IPC-HDBW4231F-AS V2.800.0000005.0.R, Build Date: 2019-03-25
 
@EMPIRETECANDY the AI deterrent cam you sell 5MP - system version 2.800.000000.3.R, 2019-07-19, IPC-HDW1431s - 2.622.000000.31.R- 2018-08-13

NVR Model: DHI-NVR5216-16P-4k2SE, v4.000.000001.5, 12/18/2019
NVR firwmare

IPC-HDW1531S
 
@EMPIRETECANDY andy this is not the solution. There are multiple different cameras and NVRs having problems with this. This isn’t a firmware problem.

this is a problem with DMSS for iPhone.