Hikvision DS-2DF7286-AEL - Missing "Platform Access" in Network, Advanced Settings

I have been using my Hikvision DS-2DF7286-AEL Network IR PTZ for about a year now and it’s been excellent.

I now want to access the camera remotely using my phone, however the “platform access" option is missing from the menu. I upgraded the firmware from the original base version of V5.4.0 160613 to the latest version V5.5.2 on the UK Hikvision portal but that made no difference.

I also tried the IPD_EN_EN_STD_5.5.71_180723 firmware on the American Hikvision website but again that made...

Hikvision DS-2DF7286-AEL - Missing "Platform Access" in Network, Advanced Settings