Can't activate developer mode on Samsung Freestyle projector

Hello everyone!
I want to install an external app to my Freestyle projector, but i can’t even enable developer mode.
I tried to do it like on a regular Samsung TV through “Apps” and 12345 in the search bar, but nothing happened.
I have already contacted Samsung Developers with this issue and they suggested to ask for help here, since Freestyle is a SmartThing device.
The questions are: Is there a developer mode on the projector?
If yes, how can I activate it to proceed further app installations through Tizen Studio?

I was also having the same problem and was only able to activate developer mode using a bluetooth keyboard.