Roller shutter for swimmingpool

Hello
I have a problem with a shelly 2.5 module.
FYI, I already use shelly 2.5 modules for my 230V house roller shutters.
I want to control the roller shutter of my swimming pool. The power supply is 24V. So far no problem. I plugged in my shelly with the switch, without the motor, and it works fine.
Once the motor is connected, as soon as I place an opening or closing command, the output is driven for less than a second and turns off. Whatever the configured control time.
I think the shelly module goes to safety.
Does anyone have any idea how to do this?
Thank you in advance.

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