Question BFT Deimos A400

[Makaroni]

Hi,

Hoping someone can assist.

I have a Meross Garage Opener which works on my BFT Deimos BT A400 when power is supplied via a power outlet externally.

However, when I use terminal 50 and 51 to convert the 24V to 5V for my USB outlet power, the Meross doesn't power up.

Terminal 60 & 61 works fine for signal (common) (start), but as soon as I try to plug into my step down converter no power goes to it.

Am I doing something wrong? Any advice appreciated.

Please see images attached.

TIA