Using balenaEngine with Supervisor and balenaCloud without balenaOS

Hi

Problem is we are only allowed to put scripts and programs on the host OS because there are important other programs on the board running which we aren´t allowed to touch (its a dispenser calculator tbh).
I did some testing with the balenaos-in-container repo and it worked with my RPi3 wiht a RPi3 Balena App but not with a RPi4 Balena APP (balenaOS in a docker container won´t connect to balenacloud). What would be the risk to use this solution in prod environment?