Chateau RBD53G-5HacD2HnD scripts not working

i purchased for the upcoming project a RBD53G-5HacD2HnD.
In my mind was i was getting a perfect working LTE Router with more than one port in Mikrotic style with CA.

at first everything was fine… just wondering of the 7.x firmware that was already installed and the check update says.. there is no new stable version.

then i started to test and configure and nearly all scripts i wanted to run on the mikrotik are not working any more, really simple ones like the routerrebootreport.
why are they selling products, that are not really finished? or am i missing somewhat? nobody told me before, that this is an early development version.
can i downgrade to a normal working version? i don’t need any fancy 7.x stuff, just a LTE Router that is working fine at a offsite location, without visiting it for about 10 to 12 months…