Old BMV 712 - can’t find remote mode?

In the settings of relay in BMV712 there is supposed to be a REM (Remote Mode) but i have MAN (Manuel Mode). Is my BMV to old? I need that extra relay or i cant go to 3.50 (loss of Gui-mods)
BMV-712 Smart
Firmware version v4.16
Serial number HQ1740ZUJ6I

The firmware is the latest for the BMV-712s devices. Have you enabled the relay as per the manual?

Well i went down to the boat and got these screenshots. I suppose this is Victronconnect App. But there is no slider. There is something i have missed or HW is too old. Only victron knows.