From your pics, idler says ZMC from ZMC Blinds likely using 7" duo brackets. Tube looks like a RS-3TU but am not sure on exact size, replacement insert mounting plates for motors available if needed.
https://www.zmc.ca/product-category/somfy/joint-shade-30-28/ https://www.zmc.ca/?post_type=product&s=rs-3tu&category=&results-per-page=20
Av outlet:
https://www.avoutlet.com/window-treatments/shade-components/motorized/adapters/somfy-9014333-st30-crown-drive/
https://www.avoutlet.com/images/product/additional/s/st30-cd_sets.pdf