Thanks for the parts. There is a slight size difference. I checked the dimensions with my caliper and is measurements on the board is 33mm x 16mm. The small pin header holes are 2.54mm gap but those holes are not breadboard friendly as the output pin holes are a slight offset.
The cyan guidelines on the PWN and GND pins are 2.54mm spacing and we can clearly see that the output pins and not in line.
Also you have submitted a similar part NOYITO Opto Isolated MOSFET (PWM) Driver - LR7843
and that part dimensions are correct I think. I think these modules are all having the PCB dimensions with just different MOSFET configurations.
It would be very helpful if you can change the board dimensions for the module.